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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
球體建築師
三位數除以一位數（一）
【案例】2018年全国1卷理科12题
四邊形的特性
球体的体积推导
Discover Resources
圓外切四邊形對邊和等長
生活中的平面圖形關係─線對稱
三角錐(旋轉，實體、透視)
Ex5C#2
直角坐标系与极坐标系的转换
Discover Topics
Curve Sketching
Fractal Geometry
Conditional Probability
Equilateral Triangles
Rectangle