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探究平行四邊形面積(2)
Author:
Ms Wong
GeoGebra
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圓的基本性質
常见四边形是否是双心四边形
科氏力 (Coriolis Force)
科赫雪花
三角函数 的副本
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regular tetrahedron in a cube
S5 chauyy
加法
基础知识
第二章 导数定义引例（蜂群增长）
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Geometric Distribution
Fractions
Triangles
Trigonometry
Line Segment