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congruent (SS) 2
Author:
Ricky Chan
GeoGebra
New Resources
三位數除以一位數（二）
算柱 (兩位數)
GeoGebra笔记功能体验课件
兩位數除以一位數（一）
兩組對邊相等的四邊形
Discover Resources
三角形與邊上一點求正三角形
謝爾賓斯基三角形(Sierpinsky)
圓面積與圓周長
椭圆的两条垂直切线的交点轨迹
黄金螺线
Discover Topics
Linear Functions
Reflection
Plane Figures or Shapes
Arithmetic Mean
Linear Equations