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部分佔全部的百分率: 例1的副本
Author:
冯圣军
,
GeoGebra Institute of Hong Kong
GeoGebra
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盈利與虧蝕
正方形雪花图案
椭圆内切圆链
科赫雪花
斐波那契螺旋弧线(表格法-可动态调节)
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Slope 斜率 - 概念及定義 (3)
立體圖形的截面
homework
圓心角
探索三角形外角定理
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Unit Circle
Angles
General Quadrilateral
Sphere
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