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三角形的四心-五線-內外二圓的副本
Author:
庄晓阳
,
Ho-Kai Chen
四心:內外重垂
GeoGebra
拉動三角形的頂點,看看圖形的變化
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比較五件物件的重量
正方形雪花图案
圓周公式的應用
探究三角形的全等條件
平行線的斜率
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立面化設計
-3/2 ≤ cosα + cosβ + cosγ ≤ 3
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Scalene Triangles
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