1. Congruent numberIn mathematics, a congruent number is a positive integer that is the area of a right triangle with three rational number sides. A more general definition includes all positive rational numbers with this property. The sequence of integer congruent numbers starts with 5, 6, 7, 13, 14, 15, 20, 21, 22, 23, 24, 28, 29, 30, 31, 34, 37, 38, 39, 41, 45, 46, 47, … For example, 5 is a congruent number because it is the area of a 20/3, 3/2, 41/6 triangle.
Read “Congruent number” on English Wikipedia
Read “合同数” on Japanese Wikipedia
Read “Congruent number” on DBpedia
Read “Congruent number” on English Wikipedia
Read “合同数” on Japanese Wikipedia
Read “Congruent number” on DBpedia
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