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郭耘 相似三角形的證明
Author:
郭耘
GeoGebra
New Resources
挂谷问题——三尖瓣形
Pythagorean Template: Integer Legs
Congruent Figures
Odd Function Explorer
希尔伯特曲线
Discover Resources
Area under parabola
Graphics
Challange 1
Adv Geo: Kites, Trapezoids, and Isosceles Trapezoids
LB9: l-b plot2
Discover Topics
Equilateral Triangles
Variance
Equations
Similar Triangles
Correlation