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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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兩位數加法
四邉形 (四年級) 教師版
柱體建築師
兩組對邊相等和有直角的四邊形
找出對稱軸
Discover Resources
圓內弦中點軌跡
椭圆的定义
平行四邊形
複合棒形圖_接疊
函數平移
Discover Topics
Linear Functions
Multiplication
Vectors 2D (Two-Dimensional)
Geometric Transformations
Polygons