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用赵爽弦图证明勾股定理
Author:
刘护灵
GeoGebra
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兩位數除以一位數（一）
【案例】圆柱体内放置一个大球六个小球
漂亮的摇摆曲线
圓的切線方程
三位數除以一位數（一）
Discover Resources
Apollonius Problem 10 CCC poncelet
四角柱算體積
丹鳳車追趕題
正四面體
密鋪圖形
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Optimization Problems
Linear Regression
Algebra
Trigonometry
Square