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projection2plane-vector
Author:
wenping168
GeoGebra
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龙形曲线-分形龙
比較五件物件的重量
双心四边形
直線的斜率：水平變化 & 鉛垂變化
科赫雪花
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EnergyMath 2-3 n次方根
Triangle
圓外切四邊形
初中数学模型
三角函数定积分的动态演示.许兴华数学
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Quadratic Functions
Trapezoid
Derivative
Linear Functions
Calculus