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三角格紋
Author:
Lin Ching Chieh
GeoGebra
New Resources
畫出對稱圖形
兩位數除以一位數（一）
算柱 (兩位數)
兩組對邊相等的四邊形
兩組對邊相等和有直角的四邊形
Discover Resources
倫敦滾石橋
相似三角形的邊長成比例
Similar triangles
面積
矩形性质推论
Discover Topics
Hypothesis Testing
Arithmetic
Subtraction
Complex Numbers
Percentages