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旋轉三角形
Author:
吳桓萱
GeoGebra
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三位數除以一位數(一)
祖冲之的期望:内棋与外棋
空间中两直线的位置关系
圓的切線方程
斜率的值
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堆一堆222
Copy of 劉徽的「割圓術」
椭圆内部全等的双椭圆构造.许兴华数学
多点联动
生日问题
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Special Points
Derivative
Sine
Trigonometric Functions
Calculus