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20200406找点构成直角和等角
Author:
陈敦莹
GeoGebra
New Resources
异形操场
科赫雪花
活动三：应用性质
科氏力 (Coriolis Force)
斐波那契螺旋弧线（表格法）
Discover Resources
slide base
餘角
Copy of 盒子的體積
拋物線 (丹德林球)
转动中的杠杆
Discover Topics
Volume
Sphere
Prism
Equilateral Triangles
Similar Triangles