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德·拉·希尔(de la hier)定理

Author:沈翔

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画直线等分三角形的面积
【案例】圆柱体内放置一个大球六个小球
球体的体积推导（优化版）
拼砌四邊形
兩組對邊相等和有直角的四邊形

Discover Resources

函數的面積 (黎曼和)
two-example
旁心
旋轉圓弧
畢氏定理的副本

Discover Topics

Isosceles Triangles
Unit Circle
Square
Vectors 2D (Two-Dimensional)
Trigonometry

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