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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
New Resources
四邉形 (四年級) 教師版
兩位數加法
兩位數除以一位數（一）
算柱 (兩位數)
三位數除以一位數（一）
Discover Resources
優良作品2
Example 5
捷徑問題
Copy of 角平分線分點比例
φ的影响
Discover Topics
Pie Chart or Circle Chart
Quadrilaterals
Surface
Integral Calculus
Curve Sketching