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二面角
Author:
qianqianhouhou
二面角的概念，拖动A、E点改变半平面
GeoGebra
New Resources
錐體建築師
GeoGebra笔记功能体验课件
【案例】2013年安徽高考15题
找出對稱軸
兩位數除以一位數（二）
Discover Resources
Rotational Symmetry
Quiz on Angles in a Circle 圓內的角：測驗
翰林B4講p192_類1
三角錐(旋轉，實體、透視)
HKDSE 2016 by Mr LO WY
Discover Topics
Inequalities
Mode
Expected Value
Rational Numbers
Linear Functions