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Perigal's Dissection
Author:
Alex CHIK
GeoGebra
GeoGebra 互動數學教室
http://www.geogebra.hk
New Resources
探究三角形的全等條件
垂直線的斜率
圓的切線方程
漂亮的摇摆曲线
【案例】圆柱体内放置一个大球六个小球
Discover Resources
比和比值
中心对称的概念
circle
表面积变化
翰林數學_2下_CH3-1_對頂角必相等
Discover Topics
Set Theory
Quadrilaterals
Tangent Line or Tangent
Solids or 3D Shapes
Trapezoid