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凹多边形的凹凸角之间的大小关系
Author:
郭勇
GeoGebra
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椭圆内切圆链
龙形曲线-分形龙
百分數及其應用
折扣
盈利與虧蝕
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assigment7
Angles formed by parallel lines and transversal
Ellipse_Horizontal
爱奇艺
一个三棱锥的绘图案例
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Random Variables
Isosceles Triangles
Sine
Subtraction
Linear Functions