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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
兩位數除以一位數（二）
四邊形的特性
柱體建築師
画直线等分三角形的面积
【案例】圆柱体内放置一个大球六个小球
Discover Resources
整數÷整數_工作紙（一）_題7
特別角的三角函數值(2)
Ch 12 Angles related to straight lines
圓例4
序列向量
Discover Topics
Similar Triangles
Sphere
Expected Value
Dilation
Trapezoid