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GeoGebra
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angle between lines
Author:
johnmayhk
GeoGebra
New Resources
GeoGebra笔记功能体验课件
找出對稱軸
【案例】圆柱体内放置一个大球六个小球
畫出對稱圖形
三位數除以一位數（二）
Discover Resources
eye tracing
gjh-b03-01 圓與直線關係
斜率
Multiplication of Polynomials(多項式的乘法)
拋物線1--焦點法