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Author:
Yin Kelvin Wong
GeoGebra
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兩位數除以一位數(二)
球体的体积推导
画直线等分三角形的面积
兩位數除以一位數(一)
三位數除以一位數(二)
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向量座標
Activity 3
cos(π/n)cos(2π/n)cos(3π/n) ... cos(nπ/n) = ?
旁心
基础知识
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Frequency Distribution
Square
Orthocenter
Ratios
Volume