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積分(黎曼和)
Author:
陳柄何
GeoGebra
New Resources
兩位數除以一位數（一）
垂直線的斜率
祖冲之的期望：内棋与外棋
画直线等分三角形的面积
直線的斜率
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阿基米德(5,6,6)
下和與上和
互化
同弓形內的圓周角
a sin(bx+c) + d 的圖形的副本
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Circle
Similar Triangles
Fractal Geometry
Differential Calculus
Rectangle