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tan90
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tan90
GeoGebra
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異分母分數減法
兩組對邊相等和有直角的四邊形
兩組對邊相等的四邊形
錐體建築師
三位數除以一位數(一)
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固定面積的圖形周界變化
Circle
淮阴2015-28
螢橋國中 鄭毅華
正多面體立面化及展開圖
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Sphere
Arithmetic Operations
Straight Lines
Set Theory
Calculus