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菱形有甚麼特性？
Author:
Anthony OR 柯志明
English version:
http://ggbtu.be/m79847
GeoGebra
New Resources
球體建築師
找出對稱軸
異分母分數減法
判斷球體
【案例】2013年安徽高考15题
Discover Resources
y=x²-a的圖形
Relationships between chords and their distances from centre
P6 圓周03C
Copy of 劉徽的「割圓術」
Orthographic Views 1
Discover Topics
Combinatorics
Tree Diagrams
Dilation
Integers
Geometric Mean