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五上-CP4-第三节平行四边形面积1
Author:
冉献伟
GeoGebra
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算柱 (兩位數)
三位數除以一位數（一）
兩組對邊相等和有直角的四邊形
直角坐標平面上的旋轉變換
找出對稱軸
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階梯函數
Rectangle_04
sin 的泰勒展開式
江苏省职校数学网络资源
烟囱
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Combinatorics
Quadrilaterals
Differential Equation
Surface
Geometric Mean