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相似三角形
Author:
gklwong
Topic:
Similar Triangles
相似三角形
GeoGebra
New Resources
兩位數除以一位數（二）
兩位數加法
兩組對邊相等的四邊形
第八周作业
畫出對稱圖形
Discover Resources
國旗
齒輪作圖
三角形的心
幂函数演示
圓例4
Discover Topics
Sphere
Quadratic Equations
Linear Equations
Vectors
Geometric Transformations