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How many isosceles triangles with whole-number length sides have a perimeter of 28 units?

 Feb 3, 2021
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The two sides with the same length have to be longer than 7.

[8, 8, 12]

[9, 9, 10]

[10, 10, 8]

[11, 11, 6]

[12, 12, 4]

[13, 13, 2]

 Feb 3, 2021

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