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几何与勾股定理
Author:
叶明杰
GeoGebra
New Resources
龙形曲线-分形龙
圓的切線方程
第八周作业2
中华人民共和国国旗
第八周作业1
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四則運算
Incentre
ego-motion
homework
圓周_心算題02
Discover Topics
Dilation
Equilateral Triangles
Cylinder
Volume
Geometric Transformations