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两平面夹角
Author:
刘莹
GeoGebra
New Resources
兩組對邊相等的四邊形
第八周作业
柱體建築師
算柱 (兩位數)
三位數除以一位數（一）
Discover Resources
由拉線80303林心怡
常數函數平移(進階)
對稱01
公切線的引入
半角公式R.J. 沃克(R.J. Walker)
Discover Topics
LCM and GCD
Real Numbers
Solids or 3D Shapes
Arithmetic Mean
Similar Triangles