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三角函数 的副本
Author:
李东
GeoGebra
New Resources
盈利與虧蝕
龙形曲线-分形龙
撒针估算面积实验
科赫雪花
常见四边形是否是双心四边形
Discover Resources
螢橋國中80235康瀚
Generalized Pythagorean Theorem
圓周 (圖形H)
(3D) Tasks: Pyramid, Paper folding & Solid of revolution[20170615]
圓的基本慨念的副本
Discover Topics
Angles
Solids or 3D Shapes
Geometry
Trapezoid
Vectors 2D (Two-Dimensional)