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初中几何公理-点到线段的垂线
Author:
WLS
GeoGebra
New Resources
斐波那契螺旋弧线（表格法）
第八周作业
科氏力 (Coriolis Force)
龙形曲线-分形龙
中华人民共和国国旗
Discover Resources
Angles in the Circumference and the Centre
部分佔全部的百分率: 例3
Demo 1
平移法（四）
假分數轉為帶分數
Discover Topics
Rotation
Planes
Addition
Plane Figures or Shapes
Vectors 2D (Two-Dimensional)