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winter vacation homework 12
Author:
sungsun0808
GeoGebra
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畫出對稱圖形
直角坐標平面上的旋轉變換
異分母分數減法
算柱 (兩位數)
【案例】2013年安徽高考15题
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雙曲線尺規作圖01
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斜射光三角量測
雙曲線1--焦點法
学用数学（分季）
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Diagrams
Boxplot
Standard Deviation
Fractions
Percentages