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平行四邊形有甚麼特性？
Author:
Anthony OR 柯志明
Topic:
Parallelogram
GeoGebra
New Resources
兩組對邊相等和有直角的四邊形
算柱 (兩位數)
畫出對稱圖形
四邊形的特性
拼砌四邊形
Discover Resources
選擇合適的「中間人」
拋射問題
切割正十二面體
平面截圆锥
刘校安排（1）
Discover Topics
Frequency Distribution
Normal Distribution
Root
Parabola
Translation