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全等三角形
Author:
gklwong
(重溫)全等三角形
GeoGebra
New Resources
平行線的判定
双心四边形
龙形曲线-分形龙
斜率的值
盈利與虧蝕
Discover Resources
垂足三角形
三角函數
立體測量：兩仰角
抛物线定义
斜率乘积为定值（椭圆、双曲线）
Discover Topics
Piecewise Functions
Geometric Mean
Linear Equations
Centroid or Barycenter
Geometry