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Angles in a Circle(圓上的角)
Author:
chisunch1
GeoGebra
New Resources
斐波那契螺旋弧线（表格法）
撒针估算面积实验
正方形雪花图案
折扣
异形操场
Discover Resources
Line Perpendicular to Plane 垂直於平面的直線
坐标变换
MFS Pyth Thm 2
National_Flag
转动中的杠杆
Discover Topics
Vectors 2D (Two-Dimensional)
Area
Trapezoid
Vectors
Square