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反射定律 Law of Reflection
Author:
W.L. Wong, Albert
GeoGebra
New Resources
三位數除以一位數（二）
GeoGebra笔记功能体验课件
異分母分數減法
【案例】圆柱体内放置一个大球六个小球
畫出對稱圖形
Discover Resources
Apollonius Problem 7 CCP poncelet
Viviani's curve
Space-filling curve
dragon(龙)
用平面截圆锥
Discover Topics
Rotation
Random Variables
Calculus
Dilation
Intersection