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平行線 (同位角 - 1對)
Author:
Mr CHANG
GeoGebra
New Resources
畫出對稱圖形
異分母分數減法
兩位數除以一位數（二）
兩組對邊相等和有直角的四邊形
拼砌四邊形
Discover Resources
熊大
題二
旋转体
拋物線
雙曲線2 交點法
Discover Topics
Triangles
Equations
Rhombus
Vectors 2D (Two-Dimensional)
Functions