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托勒密定理推廣到任意四邊形一
Author:
連琨銘
GeoGebra
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兩組對邊相等和有直角的四邊形
拼砌四邊形
判斷球體
画直线等分三角形的面积
兩組對邊相等的四邊形
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任務4
正n星角
周界2
指對數交點個數
DANDELIN
Discover Topics
Equilateral Triangles
Fractions
Combinatorics
Similar Triangles
Similarity Transformation or Similarity