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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
直角坐標平面上的旋轉變換
GeoGebra笔记功能体验课件
找出對稱軸
拼砌四邊形
【案例】2018年全国1卷理科12题
Discover Resources
正三角形內一點P, 到三頂點距3,4,5
三角形，邊上平分面積
Bricks
畢氏定理動畫
各種四邊形
Discover Topics
Function Graph
Sequences and Series
Integral Calculus
Rotation
Polynomial Functions