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三角四星
Author:
吳秉沂
GeoGebra
New Resources
兩組對邊相等和有直角的四邊形
拼砌四邊形
美國國旗 (Codex 版)
找出對稱軸
直角坐標平面上的旋轉變換
Discover Resources
反射原理
線性組合1：正六邊形
兩橢圓交集
test
Copy of 教學－與直線有關的角
Discover Topics
Standard Deviation
Median Value
Circle
Geometric Distribution
Ellipse