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顏色錯覺：灰色的草莓 練習
Author:
学用数学
GeoGebra
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【案例】2013年安徽高考15题
算柱 (兩位數)
直角坐標平面上的旋轉變換
畫出對稱圖形
第八周作业
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clock
Conic section-ellipse&hyperbola
Shen Kuo Frustum
Ice Mountain
测试
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Trigonometry
Hypothesis Testing
Geometric Distribution
General Quadrilateral
Equations