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congruent (AAA) 2
Author:
Ricky Chan
GeoGebra
New Resources
球體建築師
兩組對邊相等和有直角的四邊形
三位數除以一位數（二）
兩位數除以一位數（一）
畫出對稱圖形
Discover Resources
平面
中學(初中)
Archimedean spiral
straight line
三角函数
Discover Topics
Logarithm
Exponential Functions
Cone
Perimeter
Ellipse