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梯形有甚麼特性？
Author:
Anthony OR 柯志明
English version:
http://ggbtu.be/m79855
GeoGebra
New Resources
算柱 (兩位數)
兩組對邊相等和有直角的四邊形
Nested spiral octagon
sanjiaohanshu
美國國旗 (Codex 版)
Discover Resources
認識線型函數關係式與圖形
angle at the same segment
空間兩直線關係
纏繞畫1
複數平面-Apple Logo
Discover Topics
Quadratic Functions
Intersection
Quadratic Equations
Real Numbers
Arithmetic Operations