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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
拼砌四邊形
第八周作业
【案例】2018年全国1卷理科12题
兩位數除以一位數（二）
找出對稱軸
Discover Resources
Introduction to Polar Coordinates 極坐標簡介
glt-c05-08 正八角錐旋轉
固定周界的長方形面積變化
內擺線
Solving the equations in the form ax + b = cx + d (Grouping like terms)
Discover Topics
Set Theory
Fractions
Rotation
Expected Value
Means