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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
畫出對稱圖形
【案例】圆柱体内放置一个大球六个小球
画直线等分三角形的面积
拼砌四邊形
找出對稱軸
Discover Resources
尺規作圖找平方根點(以根號2為例)
數值滑桿
vectore_four stack pile
雙曲線的頂點
七巧板（tangram）的副本
Discover Topics
Linear Programming or Linear Optimization
Parallelogram
Set Theory
Tree Diagrams
Median Value