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Coffee Brewing Control Chart
Author:
Chenwei Chen
GeoGebra
New Resources
直角坐標平面上的旋轉變換
球體建築師
畫出對稱圖形
三位數除以一位數（一）
異分母分數減法
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Ratio of angles at the centre and the length of the arcs.
資料統計
拋物線與圓的最短距離
直角三角形的內心與相似
基础知识
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Kite
Triangles
Fractions
Probability
Cylinder