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Author:
季阳天
GeoGebra
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異分母分數減法
三位數除以一位數(一)
球體建築師
【案例】2018年全国1卷理科12题
畫出對稱圖形
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點到直線距離-3 最短發生在垂直時
立體圖形
梯形的面積
Net of cone
狗绕五边形转
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Combinatorics
Tree Diagrams
Parallelogram
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