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外心
Author:
cherry910502
GeoGebra
New Resources
找出對稱軸
四邉形 (四年級) 教師版
算柱 (兩位數)
兩組對邊相等和有直角的四邊形
畫出對稱圖形
Discover Resources
平行四邊形與菱形的分別
N邊形滾動
立體圓錐與斜切面關係
橢圓的切線作圖
切線 (The Tangent Line)
Discover Topics
Median Line
Subtraction
Fractions
Indefinite Integral
Binomial Distribution