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重心
Author:
王廷祐
GeoGebra
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【案例】2018年全国1卷理科12题
兩組對邊相等的四邊形
球体的体积推导(优化版)
兩位數加法
拼砌四邊形
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判斷球體 8
Ex (AAS)
拋物線的幾何性質
effect of changing data by Mr LO WY
漂亮的摇摆曲线
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Trapezoid
Calculus
Cylinder
Cone
Differential Equation