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平行四邊形有甚麼特性？
Author:
Anthony OR 柯志明
Topic:
Parallelogram
English version:
http://ggbtu.be/m79826
GeoGebra
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三位數除以一位數（二）
拼砌四邊形
判斷球體
小数 的副本
兩組對邊相等和有直角的四邊形
Discover Resources
Area of Triangle_2
周界
Slope 斜率 - 概念及定義 (3)的副本
平行四邊形的高
两角和的正弦公式几何证明1
Discover Topics
Arithmetic Mean
Sphere
Distributions
Division
Natural Numbers