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数学勾股定理
Author:
xuhao
GeoGebra
New Resources
椭圆内切圆链
第三周作业效果演示
科赫雪花
第八周作业2
平行線的判定
Discover Resources
眼睛的毛病(近視及遠視)
平面区域的理解
光的反射
Angles in a Circle:Property 3
了解圓方程(1)的副本
Discover Topics
Differential Calculus
Cosine
Percentages
Isosceles Triangles
Vectors 2D (Two-Dimensional)