2020中考数学经典题型汇总
1.中点
![](https://wkrtcs.bdimg.com/rtcs/image?w=181.13&md5sum=1c7139dc1c2bcbca2b05e5e95cd55673&sign=e589b81cf8&rtcs_flag=2&rtcs_ver=4&l=webapp&bucketNum=505&ipr={"t":"img","r":"r_5","w":"181.13","h":"180.27","dataType":"png","c":"word/media/image1.png","imgOriW":409,"imgOriH":407})
①中线：D为BC中点，AD为BC边上的中线
![](https://wkrtcs.bdimg.com/rtcs/image?w=390.4&md5sum=1c7139dc1c2bcbca2b05e5e95cd55673&sign=e589b81cf8&rtcs_flag=2&rtcs_ver=4&l=webapp&bucketNum=505&ipr={"t":"img","r":"r_8","w":"390.4","h":"144","dataType":"png","c":"word/media/image2_1.png","imgOriW":2197,"imgOriH":909})
![](https://wkrtcs.bdimg.com/rtcs/image?w=206.73&md5sum=1c7139dc1c2bcbca2b05e5e95cd55673&sign=e589b81cf8&rtcs_flag=2&rtcs_ver=4&l=webapp&bucketNum=505&ipr={"t":"img","r":"r_10","w":"206.73","h":"109.47","dataType":"png","c":"word/media/image3.png","imgOriW":270,"imgOriH":143})
1.例．如图，在菱形ABCD中，tan∠ABC=，P为AB上一点，以PB为边向外作菱形PMNB，连结DM，取DM中点E，连结AE，PE，则的值为（ ）
A．![](https://wkrtcs.bdimg.com/rtcs/image?w=13.00&md5sum=1c7139dc1c2bcbca2b05e5e95cd55673&sign=e589b81cf8&rtcs_flag=2&rtcs_ver=4&l=webapp&bucketNum=505&ipr={"t":"img","r":"r_14","w":"13.00","h":"35.07","dataType":"png","c":"word/media/image6.png","imgOriW":13,"imgOriH":35})
B． C． D．
![](https://wkrtcs.bdimg.com/rtcs/image?w=721.53&md5sum=1c7139dc1c2bcbca2b05e5e95cd55673&sign=e589b81cf8&rtcs_flag=2&rtcs_ver=4&l=webapp&bucketNum=505&ipr={"t":"img","r":"r_17","w":"721.53","h":"96.47","dataType":"png","c":"word/media/image10.png","imgOriW":1257,"imgOriH":168})
2.角平分线
![](https://wkrtcs.bdimg.com/rtcs/image?w=211.13&md5sum=1c7139dc1c2bcbca2b05e5e95cd55673&sign=e589b81cf8&rtcs_flag=2&rtcs_ver=4&l=webapp&bucketNum=505&ipr={"t":"img","r":"r_16","w":"211.13","h":"134.00","dataType":"png","c":"word/media/image11.png","imgOriW":405,"imgOriH":257})
②角平分线：AE平分∠BAC
![](https://wkrtcs.bdimg.com/rtcs/image?w=276.8&md5sum=1c7139dc1c2bcbca2b05e5e95cd55673&sign=e589b81cf8&rtcs_flag=2&rtcs_ver=4&l=webapp&bucketNum=505&ipr={"t":"img","r":"r_8","w":"276.8","h":"136","dataType":"png","c":"word/media/image12_1.png","imgOriW":2006,"imgOriH":989})
![](https://wkrtcs.bdimg.com/rtcs/image?w=698.80&md5sum=1c7139dc1c2bcbca2b05e5e95cd55673&sign=e589b81cf8&rtcs_flag=2&rtcs_ver=4&l=webapp&bucketNum=505&ipr={"t":"img","r":"r_17","w":"698.80","h":"49.73","dataType":"png","c":"word/media/image13.png","imgOriW":1223,"imgOriH":87})
![](https://wkrtcs.bdimg.com/rtcs/image?w=689.40&md5sum=1c7139dc1c2bcbca2b05e5e95cd55673&sign=e589b81cf8&rtcs_flag=2&rtcs_ver=4&l=webapp&bucketNum=505&ipr={"t":"img","r":"r_17","w":"689.40","h":"121.47","dataType":"png","c":"word/media/image14.png","imgOriW":1249,"imgOriH":220})
![](https://wkrtcs.bdimg.com/rtcs/image?w=704.13&md5sum=1c7139dc1c2bcbca2b05e5e95cd55673&sign=e589b81cf8&rtcs_flag=2&rtcs_ver=4&l=webapp&bucketNum=505&ipr={"t":"img","r":"r_17","w":"704.13","h":"242.40","dataType":"png","c":"word/media/image15.png","imgOriW":1278,"imgOriH":440})
![](https://wkrtcs.bdimg.com/rtcs/image?w=710.00&md5sum=1c7139dc1c2bcbca2b05e5e95cd55673&sign=e589b81cf8&rtcs_flag=2&rtcs_ver=4&l=webapp&bucketNum=505&ipr={"t":"img","r":"r_17","w":"710.00","h":"122.13","dataType":"png","c":"word/media/image16.png","imgOriW":1250,"imgOriH":215})
![](https://wkrtcs.bdimg.com/rtcs/image?w=242.67&md5sum=1c7139dc1c2bcbca2b05e5e95cd55673&sign=e589b81cf8&rtcs_flag=2&rtcs_ver=4&l=webapp&bucketNum=505&ipr={"t":"img","r":"r_20","w":"242.67","h":"390.67","dataType":"gif","c":"word/media/image17.gif"})
3.高线
③垂线：AF⊥BC
![](https://wkrtcs.bdimg.com/rtcs/image?w=211.2&md5sum=1c7139dc1c2bcbca2b05e5e95cd55673&sign=e589b81cf8&rtcs_flag=2&rtcs_ver=4&l=webapp&bucketNum=505&ipr={"t":"img","r":"r_8","w":"211.2","h":"92.8","dataType":"png","c":"word/media/image18_1.png","imgOriW":2094,"imgOriH":928})
②直角三角形：AD为中线AE为垂线
![](https://wkrtcs.bdimg.com/rtcs/image?w=300.8&md5sum=1c7139dc1c2bcbca2b05e5e95cd55673&sign=e589b81cf8&rtcs_flag=2&rtcs_ver=4&l=webapp&bucketNum=505&ipr={"t":"img","r":"r_8","w":"300.8","h":"211.2","dataType":"png","c":"word/media/image19_1.png","imgOriW":1695,"imgOriH":1185})
![](https://wkrtcs.bdimg.com/rtcs/image?w=669.93&md5sum=1c7139dc1c2bcbca2b05e5e95cd55673&sign=e589b81cf8&rtcs_flag=2&rtcs_ver=4&l=webapp&bucketNum=505&ipr={"t":"img","r":"r_17","w":"669.93","h":"160.33","dataType":"png","c":"word/media/image20.png","imgOriW":1241,"imgOriH":297})
![](https://wkrtcs.bdimg.com/rtcs/image?w=675.67&md5sum=1c7139dc1c2bcbca2b05e5e95cd55673&sign=e589b81cf8&rtcs_flag=2&rtcs_ver=4&l=webapp&bucketNum=505&ipr={"t":"img","r":"r_17","w":"675.67","h":"127.07","dataType":"png","c":"word/media/image21.png","imgOriW":1260,"imgOriH":237})
![](https://wkrtcs.bdimg.com/rtcs/image?w=677.60&md5sum=1c7139dc1c2bcbca2b05e5e95cd55673&sign=e589b81cf8&rtcs_flag=2&rtcs_ver=4&l=webapp&bucketNum=505&ipr={"t":"img","r":"r_17","w":"677.60","h":"207.27","dataType":"png","c":"word/media/image22.png","imgOriW":1249,"imgOriH":382})
![](https://wkrtcs.bdimg.com/rtcs/image?w=692.33&md5sum=1c7139dc1c2bcbca2b05e5e95cd55673&sign=e589b81cf8&rtcs_flag=2&rtcs_ver=4&l=webapp&bucketNum=505&ipr={"t":"img","r":"r_17","w":"692.33","h":"64.33","dataType":"png","c":"word/media/image23.png","imgOriW":1184,"imgOriH":110})
![](https://wkrtcs.bdimg.com/rtcs/image?w=214.33&md5sum=1c7139dc1c2bcbca2b05e5e95cd55673&sign=e589b81cf8&rtcs_flag=2&rtcs_ver=4&l=webapp&bucketNum=505&ipr={"t":"img","r":"r_16","w":"214.33","h":"142.33","dataType":"png","c":"word/media/image24.png","imgOriW":354,"imgOriH":235})
![](https://wkrtcs.bdimg.com/rtcs/image?w=233.73&md5sum=1c7139dc1c2bcbca2b05e5e95cd55673&sign=e589b81cf8&rtcs_flag=2&rtcs_ver=4&l=webapp&bucketNum=505&ipr={"t":"img","r":"r_23","w":"233.73","h":"166.47","dataType":"png","c":"word/media/image25.png","imgOriW":736,"imgOriH":524})
4.函数坐标公式
公式1：两点求斜率k
![](https://wkrtcs.bdimg.com/rtcs/image?w=96&md5sum=1c7139dc1c2bcbca2b05e5e95cd55673&sign=e589b81cf8&rtcs_flag=2&rtcs_ver=4&l=webapp&bucketNum=505&ipr={"t":"img","r":"r_26","w":"96","h":"44.8","dataType":"png","c":"word/media/image26_1.png","imgOriW":1946,"imgOriH":919})
![](https://wkrtcs.bdimg.com/rtcs/image?w=276.8&md5sum=1c7139dc1c2bcbca2b05e5e95cd55673&sign=e589b81cf8&rtcs_flag=2&rtcs_ver=4&l=webapp&bucketNum=505&ipr={"t":"img","r":"r_26","w":"276.8","h":"148.8","dataType":"png","c":"word/media/image27_1.png","imgOriW":1926,"imgOriH":1032})
公式2：两点之间距离
![](https://wkrtcs.bdimg.com/rtcs/image?w=204.8&md5sum=1c7139dc1c2bcbca2b05e5e95cd55673&sign=e589b81cf8&rtcs_flag=2&rtcs_ver=4&l=webapp&bucketNum=505&ipr={"t":"img","r":"r_26","w":"204.8","h":"28.8","dataType":"png","c":"word/media/image28_1.png","imgOriW":3567,"imgOriH":513})
应用：弦长公式
公式3：中点公式
![](https://wkrtcs.bdimg.com/rtcs/image?w=281.6&md5sum=1c7139dc1c2bcbca2b05e5e95cd55673&sign=e589b81cf8&rtcs_flag=2&rtcs_ver=4&l=webapp&bucketNum=505&ipr={"t":"img","r":"r_26","w":"281.6","h":"84.8","dataType":"png","c":"word/media/image29_1.png","imgOriW":2540,"imgOriH":770})
应用：求中点坐标
公式4：两直线平行与垂直
![](https://wkrtcs.bdimg.com/rtcs/image?w=164.8&md5sum=1c7139dc1c2bcbca2b05e5e95cd55673&sign=e589b81cf8&rtcs_flag=2&rtcs_ver=4&l=webapp&bucketNum=505&ipr={"t":"img","r":"r_26","w":"164.8","h":"48","dataType":"png","c":"word/media/image30_1.png","imgOriW":2521,"imgOriH":738})
应用：①平行与垂直②直角三角形
![](https://wkrtcs.bdimg.com/rtcs/image?w=696.93&md5sum=1c7139dc1c2bcbca2b05e5e95cd55673&sign=e589b81cf8&rtcs_flag=2&rtcs_ver=4&l=webapp&bucketNum=505&ipr={"t":"img","r":"r_17","w":"696.93","h":"310.40","dataType":"png","c":"word/media/image31.png","imgOriW":1262,"imgOriH":562})
![](https://wkrtcs.bdimg.com/rtcs/image?w=708.53&md5sum=1c7139dc1c2bcbca2b05e5e95cd55673&sign=e589b81cf8&rtcs_flag=2&rtcs_ver=4&l=webapp&bucketNum=505&ipr={"t":"img","r":"r_17","w":"708.53","h":"100.47","dataType":"png","c":"word/media/image32.png","imgOriW":1220,"imgOriH":173})
![](https://wkrtcs.bdimg.com/rtcs/image?w=696.53&md5sum=1c7139dc1c2bcbca2b05e5e95cd55673&sign=e589b81cf8&rtcs_flag=2&rtcs_ver=4&l=webapp&bucketNum=505&ipr={"t":"img","r":"r_17","w":"696.53","h":"141.07","dataType":"png","c":"word/media/image33.png","imgOriW":1244,"imgOriH":252})
5.相似中的特殊角
![](https://wkrtcs.bdimg.com/rtcs/image?w=196.8&md5sum=1c7139dc1c2bcbca2b05e5e95cd55673&sign=e589b81cf8&rtcs_flag=2&rtcs_ver=4&l=webapp&bucketNum=505&ipr={"t":"img","r":"r_29","w":"196.8","h":"44.8","dataType":"png","c":"word/media/image34_1.png","imgOriW":2886,"imgOriH":648})
![](https://wkrtcs.bdimg.com/rtcs/image?w=640.27&md5sum=1c7139dc1c2bcbca2b05e5e95cd55673&sign=e589b81cf8&rtcs_flag=2&rtcs_ver=4&l=webapp&bucketNum=505&ipr={"t":"img","r":"r_17","w":"640.27","h":"134.80","dataType":"png","c":"word/media/image36.png","imgOriW":1487,"imgOriH":313})
![](https://wkrtcs.bdimg.com/rtcs/image?w=668.53&md5sum=1c7139dc1c2bcbca2b05e5e95cd55673&sign=e589b81cf8&rtcs_flag=2&rtcs_ver=4&l=webapp&bucketNum=505&ipr={"t":"img","r":"r_17","w":"668.53","h":"180.20","dataType":"png","c":"word/media/image38.png","imgOriW":994,"imgOriH":268})
![](https://wkrtcs.bdimg.com/rtcs/image?w=528.00&md5sum=1c7139dc1c2bcbca2b05e5e95cd55673&sign=e589b81cf8&rtcs_flag=2&rtcs_ver=4&l=webapp&bucketNum=505&ipr={"t":"img","r":"r_20","w":"528.00","h":"174.67","dataType":"gif","c":"word/media/image39.gif"})
6.将军引马
![](https://wkrtcs.bdimg.com/rtcs/image?w=671.87&md5sum=1c7139dc1c2bcbca2b05e5e95cd55673&sign=e589b81cf8&rtcs_flag=2&rtcs_ver=4&l=webapp&bucketNum=505&ipr={"t":"img","r":"r_17","w":"671.87","h":"124.60","dataType":"png","c":"word/media/image40.png","imgOriW":1014,"imgOriH":188})
![](https://wkrtcs.bdimg.com/rtcs/image?w=662.33&md5sum=1c7139dc1c2bcbca2b05e5e95cd55673&sign=e589b81cf8&rtcs_flag=2&rtcs_ver=4&l=webapp&bucketNum=505&ipr={"t":"img","r":"r_17","w":"662.33","h":"293.07","dataType":"png","c":"word/media/image41.png","imgOriW":1069,"imgOriH":473})
7.旋转
![](https://wkrtcs.bdimg.com/rtcs/image?w=470.67&md5sum=1c7139dc1c2bcbca2b05e5e95cd55673&sign=e589b81cf8&rtcs_flag=2&rtcs_ver=4&l=webapp&bucketNum=505&ipr={"t":"img","r":"r_30","w":"470.67","h":"174.67","dataType":"gif","c":"word/media/image42.gif"})
![](https://wkrtcs.bdimg.com/rtcs/image?w=641.67&md5sum=1c7139dc1c2bcbca2b05e5e95cd55673&sign=e589b81cf8&rtcs_flag=2&rtcs_ver=4&l=webapp&bucketNum=505&ipr={"t":"img","r":"r_17","w":"641.67","h":"239.47","dataType":"png","c":"word/media/image43.png","imgOriW":959,"imgOriH":358})
![](https://wkrtcs.bdimg.com/rtcs/image?w=666.07&md5sum=1c7139dc1c2bcbca2b05e5e95cd55673&sign=e589b81cf8&rtcs_flag=2&rtcs_ver=4&l=webapp&bucketNum=505&ipr={"t":"img","r":"r_17","w":"666.07","h":"117.13","dataType":"png","c":"word/media/image44.png","imgOriW":1126,"imgOriH":198})
![](https://wkrtcs.bdimg.com/rtcs/image?w=668.13&md5sum=1c7139dc1c2bcbca2b05e5e95cd55673&sign=e589b81cf8&rtcs_flag=2&rtcs_ver=4&l=webapp&bucketNum=505&ipr={"t":"img","r":"r_17","w":"668.13","h":"121.60","dataType":"png","c":"word/media/image45.png","imgOriW":1264,"imgOriH":230})
![](https://wkrtcs.bdimg.com/rtcs/image?w=689.40&md5sum=1c7139dc1c2bcbca2b05e5e95cd55673&sign=e589b81cf8&rtcs_flag=2&rtcs_ver=4&l=webapp&bucketNum=505&ipr={"t":"img","r":"r_17","w":"689.40","h":"100.60","dataType":"png","c":"word/media/image46.png","imgOriW":1254,"imgOriH":183})
![](https://wkrtcs.bdimg.com/rtcs/image?w=693.73&md5sum=1c7139dc1c2bcbca2b05e5e95cd55673&sign=e589b81cf8&rtcs_flag=2&rtcs_ver=4&l=webapp&bucketNum=505&ipr={"t":"img","r":"r_17","w":"693.73","h":"172.33","dataType":"png","c":"word/media/image47.png","imgOriW":1264,"imgOriH":314})
![](https://wkrtcs.bdimg.com/rtcs/image?w=674.07&md5sum=1c7139dc1c2bcbca2b05e5e95cd55673&sign=e589b81cf8&rtcs_flag=2&rtcs_ver=4&l=webapp&bucketNum=505&ipr={"t":"img","r":"r_17","w":"674.07","h":"178.13","dataType":"png","c":"word/media/image48.png","imgOriW":1241,"imgOriH":328})
![](https://wkrtcs.bdimg.com/rtcs/image?w=680.33&md5sum=1c7139dc1c2bcbca2b05e5e95cd55673&sign=e589b81cf8&rtcs_flag=2&rtcs_ver=4&l=webapp&bucketNum=505&ipr={"t":"img","r":"r_17","w":"680.33","h":"144.07","dataType":"png","c":"word/media/image49.png","imgOriW":1261,"imgOriH":267})
![](https://wkrtcs.bdimg.com/rtcs/image?w=679.33&md5sum=1c7139dc1c2bcbca2b05e5e95cd55673&sign=e589b81cf8&rtcs_flag=2&rtcs_ver=4&l=webapp&bucketNum=505&ipr={"t":"img","r":"r_17","w":"679.33","h":"350.60","dataType":"png","c":"word/media/image51.png","imgOriW":1056,"imgOriH":545})
8.对称
![](https://wkrtcs.bdimg.com/rtcs/image?w=660.80&md5sum=1c7139dc1c2bcbca2b05e5e95cd55673&sign=e589b81cf8&rtcs_flag=2&rtcs_ver=4&l=webapp&bucketNum=505&ipr={"t":"img","r":"r_17","w":"660.80","h":"257.40","dataType":"png","c":"word/media/image56.png","imgOriW":1032,"imgOriH":402})
![](https://wkrtcs.bdimg.com/rtcs/image?w=703.13&md5sum=1c7139dc1c2bcbca2b05e5e95cd55673&sign=e589b81cf8&rtcs_flag=2&rtcs_ver=4&l=webapp&bucketNum=505&ipr={"t":"img","r":"r_17","w":"703.13","h":"440.47","dataType":"png","c":"word/media/image60.png","imgOriW":934,"imgOriH":585})
![](https://wkrtcs.bdimg.com/rtcs/image?w=224.87&md5sum=1c7139dc1c2bcbca2b05e5e95cd55673&sign=e589b81cf8&rtcs_flag=2&rtcs_ver=4&l=webapp&bucketNum=505&ipr={"t":"img","r":"r_16","w":"224.87","h":"174.93","dataType":"png","c":"word/media/image62.png","imgOriW":656,"imgOriH":510})
9.反比例函数
![](https://wkrtcs.bdimg.com/rtcs/image?w=196.8&md5sum=1c7139dc1c2bcbca2b05e5e95cd55673&sign=e589b81cf8&rtcs_flag=2&rtcs_ver=4&l=webapp&bucketNum=505&ipr={"t":"img","r":"r_32","w":"196.8","h":"120","dataType":"png","c":"word/media/image63_1.png","imgOriW":1787,"imgOriH":1094})
![](https://wkrtcs.bdimg.com/rtcs/image?w=687.20&md5sum=1c7139dc1c2bcbca2b05e5e95cd55673&sign=e589b81cf8&rtcs_flag=2&rtcs_ver=4&l=webapp&bucketNum=505&ipr={"t":"img","r":"r_17","w":"687.20","h":"163.80","dataType":"png","c":"word/media/image64.png","imgOriW":1246,"imgOriH":297})
![](https://wkrtcs.bdimg.com/rtcs/image?w=701.93&md5sum=1c7139dc1c2bcbca2b05e5e95cd55673&sign=e589b81cf8&rtcs_flag=2&rtcs_ver=4&l=webapp&bucketNum=505&ipr={"t":"img","r":"r_17","w":"701.93","h":"156.00","dataType":"png","c":"word/media/image65.png","imgOriW":1251,"imgOriH":278})
![](https://wkrtcs.bdimg.com/rtcs/image?w=703.60&md5sum=1c7139dc1c2bcbca2b05e5e95cd55673&sign=e589b81cf8&rtcs_flag=2&rtcs_ver=4&l=webapp&bucketNum=505&ipr={"t":"img","r":"r_17","w":"703.60","h":"229.27","dataType":"png","c":"word/media/image66.png","imgOriW":1255,"imgOriH":409})
![](https://wkrtcs.bdimg.com/rtcs/image?w=706.93&md5sum=1c7139dc1c2bcbca2b05e5e95cd55673&sign=e589b81cf8&rtcs_flag=2&rtcs_ver=4&l=webapp&bucketNum=505&ipr={"t":"img","r":"r_17","w":"706.93","h":"119.60","dataType":"png","c":"word/media/image67.png","imgOriW":1017,"imgOriH":172})
![](https://wkrtcs.bdimg.com/rtcs/image?w=699.07&md5sum=1c7139dc1c2bcbca2b05e5e95cd55673&sign=e589b81cf8&rtcs_flag=2&rtcs_ver=4&l=webapp&bucketNum=505&ipr={"t":"img","r":"r_17","w":"699.07","h":"133.80","dataType":"png","c":"word/media/image68.png","imgOriW":1254,"imgOriH":240})
![](https://wkrtcs.bdimg.com/rtcs/image?w=695.00&md5sum=1c7139dc1c2bcbca2b05e5e95cd55673&sign=e589b81cf8&rtcs_flag=2&rtcs_ver=4&l=webapp&bucketNum=505&ipr={"t":"img","r":"r_17","w":"695.00","h":"127.13","dataType":"png","c":"word/media/image69.png","imgOriW":1268,"imgOriH":232})
![](https://wkrtcs.bdimg.com/rtcs/image?w=665.00&md5sum=1c7139dc1c2bcbca2b05e5e95cd55673&sign=e589b81cf8&rtcs_flag=2&rtcs_ver=4&l=webapp&bucketNum=505&ipr={"t":"img","r":"r_17","w":"665.00","h":"210.00","dataType":"png","c":"word/media/image70.png","imgOriW":776,"imgOriH":245})
10.二次函数 ![](https://wkrtcs.bdimg.com/rtcs/image?w=244.73&md5sum=1c7139dc1c2bcbca2b05e5e95cd55673&sign=e589b81cf8&rtcs_flag=2&rtcs_ver=4&l=webapp&bucketNum=505&ipr={"t":"img","r":"r_16","w":"244.73","h":"209.87","dataType":"png","c":"word/media/image73.png","imgOriW":519,"imgOriH":445})
![](https://wkrtcs.bdimg.com/rtcs/image?w=242.67&md5sum=1c7139dc1c2bcbca2b05e5e95cd55673&sign=e589b81cf8&rtcs_flag=2&rtcs_ver=4&l=webapp&bucketNum=505&ipr={"t":"img","r":"r_4","w":"242.67","h":"144.00","dataType":"gif","c":"word/media/image74.gif"})
![](https://wkrtcs.bdimg.com/rtcs/image?w=691.87&md5sum=1c7139dc1c2bcbca2b05e5e95cd55673&sign=e589b81cf8&rtcs_flag=2&rtcs_ver=4&l=webapp&bucketNum=505&ipr={"t":"img","r":"r_17","w":"691.87","h":"200.13","dataType":"png","c":"word/media/image75.png","imgOriW":1272,"imgOriH":368})
![](https://wkrtcs.bdimg.com/rtcs/image?w=670.93&md5sum=1c7139dc1c2bcbca2b05e5e95cd55673&sign=e589b81cf8&rtcs_flag=2&rtcs_ver=4&l=webapp&bucketNum=505&ipr={"t":"img","r":"r_17","w":"670.93","h":"148.13","dataType":"png","c":"word/media/image76.png","imgOriW":992,"imgOriH":219})
![](https://wkrtcs.bdimg.com/rtcs/image?w=714.27&md5sum=1c7139dc1c2bcbca2b05e5e95cd55673&sign=e589b81cf8&rtcs_flag=2&rtcs_ver=4&l=webapp&bucketNum=505&ipr={"t":"img","r":"r_17","w":"714.27","h":"243.13","dataType":"png","c":"word/media/image81.png","imgOriW":993,"imgOriH":338})
![](https://wkrtcs.bdimg.com/rtcs/image?w=715.73&md5sum=1c7139dc1c2bcbca2b05e5e95cd55673&sign=e589b81cf8&rtcs_flag=2&rtcs_ver=4&l=webapp&bucketNum=505&ipr={"t":"img","r":"r_17","w":"715.73","h":"140.67","dataType":"png","c":"word/media/image85.png","imgOriW":1252,"imgOriH":246})
11.圆
![](https://wkrtcs.bdimg.com/rtcs/image?w=339.2&md5sum=1c7139dc1c2bcbca2b05e5e95cd55673&sign=e589b81cf8&rtcs_flag=2&rtcs_ver=4&l=webapp&bucketNum=505&ipr={"t":"img","r":"r_8","w":"339.2","h":"195.2","dataType":"png","c":"word/media/image87_1.png","imgOriW":1870,"imgOriH":1075})
![](https://wkrtcs.bdimg.com/rtcs/image?w=687.07&md5sum=1c7139dc1c2bcbca2b05e5e95cd55673&sign=e589b81cf8&rtcs_flag=2&rtcs_ver=4&l=webapp&bucketNum=505&ipr={"t":"img","r":"r_17","w":"687.07","h":"297.80","dataType":"png","c":"word/media/image88.png","imgOriW":946,"imgOriH":410})
![](https://wkrtcs.bdimg.com/rtcs/image?w=697.67&md5sum=1c7139dc1c2bcbca2b05e5e95cd55673&sign=e589b81cf8&rtcs_flag=2&rtcs_ver=4&l=webapp&bucketNum=505&ipr={"t":"img","r":"r_17","w":"697.67","h":"144.13","dataType":"png","c":"word/media/image93.png","imgOriW":1254,"imgOriH":259})
![](https://wkrtcs.bdimg.com/rtcs/image?w=701.33&md5sum=1c7139dc1c2bcbca2b05e5e95cd55673&sign=e589b81cf8&rtcs_flag=2&rtcs_ver=4&l=webapp&bucketNum=505&ipr={"t":"img","r":"r_17","w":"701.33","h":"132.27","dataType":"png","c":"word/media/image94.png","imgOriW":1262,"imgOriH":238})
![](https://wkrtcs.bdimg.com/rtcs/image?w=697.20&md5sum=1c7139dc1c2bcbca2b05e5e95cd55673&sign=e589b81cf8&rtcs_flag=2&rtcs_ver=4&l=webapp&bucketNum=505&ipr={"t":"img","r":"r_17","w":"697.20","h":"106.13","dataType":"png","c":"word/media/image95.png","imgOriW":1248,"imgOriH":190})
![](https://wkrtcs.bdimg.com/rtcs/image?w=709.80&md5sum=1c7139dc1c2bcbca2b05e5e95cd55673&sign=e589b81cf8&rtcs_flag=2&rtcs_ver=4&l=webapp&bucketNum=505&ipr={"t":"img","r":"r_17","w":"709.80","h":"190.33","dataType":"png","c":"word/media/image96.png","imgOriW":1242,"imgOriH":333})
![](https://wkrtcs.bdimg.com/rtcs/image?w=701.53&md5sum=1c7139dc1c2bcbca2b05e5e95cd55673&sign=e589b81cf8&rtcs_flag=2&rtcs_ver=4&l=webapp&bucketNum=505&ipr={"t":"img","r":"r_17","w":"701.53","h":"118.27","dataType":"png","c":"word/media/image97.png","imgOriW":1246,"imgOriH":210})
![](https://wkrtcs.bdimg.com/rtcs/image?w=720.67&md5sum=1c7139dc1c2bcbca2b05e5e95cd55673&sign=e589b81cf8&rtcs_flag=2&rtcs_ver=4&l=webapp&bucketNum=505&ipr={"t":"img","r":"r_17","w":"720.67","h":"167.47","dataType":"png","c":"word/media/image98.png","imgOriW":1239,"imgOriH":288})
12.规律题
![](https://wkrtcs.bdimg.com/rtcs/image?w=707.40&md5sum=1c7139dc1c2bcbca2b05e5e95cd55673&sign=e589b81cf8&rtcs_flag=2&rtcs_ver=4&l=webapp&bucketNum=505&ipr={"t":"img","r":"r_17","w":"707.40","h":"284.00","dataType":"png","c":"word/media/image102.png","imgOriW":1273,"imgOriH":511})
![](https://wkrtcs.bdimg.com/rtcs/image?w=702.27&md5sum=1c7139dc1c2bcbca2b05e5e95cd55673&sign=e589b81cf8&rtcs_flag=2&rtcs_ver=4&l=webapp&bucketNum=505&ipr={"t":"img","r":"r_17","w":"702.27","h":"160.27","dataType":"png","c":"word/media/image104.png","imgOriW":1249,"imgOriH":285})
圆
![](https://wkrtcs.bdimg.com/rtcs/image?w=716.60&md5sum=1c7139dc1c2bcbca2b05e5e95cd55673&sign=e589b81cf8&rtcs_flag=2&rtcs_ver=4&l=webapp&bucketNum=505&ipr={"t":"img","r":"r_17","w":"716.60","h":"175.67","dataType":"png","c":"word/media/image105.png","imgOriW":775,"imgOriH":190})
![](https://wkrtcs.bdimg.com/rtcs/image?w=710.20&md5sum=1c7139dc1c2bcbca2b05e5e95cd55673&sign=e589b81cf8&rtcs_flag=2&rtcs_ver=4&l=webapp&bucketNum=505&ipr={"t":"img","r":"r_17","w":"710.20","h":"425.20","dataType":"png","c":"word/media/image106.png","imgOriW":1084,"imgOriH":649})
![](https://wkrtcs.bdimg.com/rtcs/image?w=699.80&md5sum=1c7139dc1c2bcbca2b05e5e95cd55673&sign=e589b81cf8&rtcs_flag=2&rtcs_ver=4&l=webapp&bucketNum=505&ipr={"t":"img","r":"r_17","w":"699.80","h":"200.33","dataType":"png","c":"word/media/image107.png","imgOriW":950,"imgOriH":272})
13.应用题
![](https://wkrtcs.bdimg.com/rtcs/image?w=735.60&md5sum=1c7139dc1c2bcbca2b05e5e95cd55673&sign=e589b81cf8&rtcs_flag=2&rtcs_ver=4&l=webapp&bucketNum=505&ipr={"t":"img","r":"r_17","w":"735.60","h":"333.47","dataType":"png","c":"word/media/image109.png","imgOriW":1251,"imgOriH":567})
![](https://wkrtcs.bdimg.com/rtcs/image?w=701.67&md5sum=1c7139dc1c2bcbca2b05e5e95cd55673&sign=e589b81cf8&rtcs_flag=2&rtcs_ver=4&l=webapp&bucketNum=505&ipr={"t":"img","r":"r_17","w":"701.67","h":"169.47","dataType":"png","c":"word/media/image110.png","imgOriW":1006,"imgOriH":243})
![](https://wkrtcs.bdimg.com/rtcs/image?w=688.27&md5sum=1c7139dc1c2bcbca2b05e5e95cd55673&sign=e589b81cf8&rtcs_flag=2&rtcs_ver=4&l=webapp&bucketNum=505&ipr={"t":"img","r":"r_17","w":"688.27","h":"342.07","dataType":"png","c":"word/media/image113.png","imgOriW":1161,"imgOriH":577})
![](https://wkrtcs.bdimg.com/rtcs/image?w=693.53&md5sum=1c7139dc1c2bcbca2b05e5e95cd55673&sign=e589b81cf8&rtcs_flag=2&rtcs_ver=4&l=webapp&bucketNum=505&ipr={"t":"img","r":"r_17","w":"693.53","h":"439.40","dataType":"png","c":"word/media/image116.png","imgOriW":1132,"imgOriH":717})
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