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平行四邊形
Author:
Ching-Hui Chou
Topic:
Parallelogram
GeoGebra
New Resources
兩組對邊相等和有直角的四邊形
三位數除以一位數（二）
球体的体积推导
找出對稱軸
判斷球體
Discover Resources
過圓內C點的弦中點軌跡
對數函數
颱風暴風圈
Copie de 河內塔 (Tower of Hanoi)
Copy of 分數加法
Discover Topics
Ratios
Arithmetic Operations
Sine
Vectors
Parabola