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由中點找平行四邊形
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学用数学
GeoGebra
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兩位數加法
【案例】2018年全国1卷理科12题
找出對稱軸
判斷球體
兩組對邊相等和有直角的四邊形
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來畫雙曲線
探究正方體的截面
三心
構作放大圖形
一次函数
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Fractions
Ratios
Interest Calculation
Calculus
Integers