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十七個圓
Author:
吳恩誌
GeoGebra
New Resources
折扣
龙形曲线-分形龙
科赫雪花
三角函数 的副本
盈利與虧蝕
Discover Resources
龍騰4_1-1講段9
angle between line and plane
動畫
semicircle
題三
Discover Topics
Plane Figures or Shapes
Unit Circle
Geometry
Sine
Upper and Lower Sum or Riemann Sum