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圓外切四邊形
Author:
Gideon Huang
GeoGebra
New Resources
找出對稱軸
直角坐標平面上的旋轉變換
三位數除以一位數（二）
拼砌四邊形
球體建築師
Discover Resources
三角形重心
荒島尋寶
梯形堆垛
內外角平分線的副本
分數乘法列式練習
Discover Topics
Linear Functions
Constructions
Isosceles Triangles
Planes
Logarithmic Functions