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垂直2
Author:
Hui Sir
GeoGebra
New Resources
兩組對邊相等和有直角的四邊形
兩位數除以一位數（二）
拼砌四邊形
兩組對邊相等的四邊形
四邊形的特性
Discover Resources
圖形縮放展示
圖二
平行線
数学涂鸦
貝氏定理 (計算偽陽性/偽陰性之機率)
Discover Topics
Interest Calculation
Prism
Parametric Curves
Constructions
Area