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初二奥数：全等三角形
Author:
王俊辉
初二奥数：全等三角形
GeoGebra
New Resources
第八周作业
【案例】2018年全国1卷理科12题
兩組對邊相等的四邊形
判斷球體
找出對稱軸
Discover Resources
三角函數with sine, cosine圖形
string art
平行四邊形堆垛
正方体展开图的副本
一次函数运动变化的图象.许兴华数学
Discover Topics
Hyperbola
Perimeter
Triangles
Circumcircle or Circumscribed Circle
Upper and Lower Sum or Riemann Sum