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Coffee Brewing Control Chart
Author:
Chenwei Chen
GeoGebra
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画直线等分三角形的面积
三位數除以一位數（二）
兩組對邊相等的四邊形
兩位數除以一位數（二）
兩組對邊相等和有直角的四邊形
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外心
Similar triangles inscribed iteration
Indices 5
百變火柴
三角函数诱导公式的副本
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Ellipse
Straight Lines
Derivative
Standard Deviation
Solids or 3D Shapes