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Author:
周錦鋒
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trigonometric function
Geogebra 考题 旋转的正方形
penrose triangle
正立方體裁邊 (Chamfered Cube)
动态绘制函数图象
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正方體的反射對稱3
正多角柱(簡易)
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指數_2
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Functions
General Quadrilateral
Arithmetic Operations
Similar Triangles
Difference and Slope