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How many triangles exist with side lengths 7 in, 7 in, 7 in

1 Answer

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Only one possible triangle exists with these sides.

A triangle with equal sides is an equilateral triangle. All equilateral triangles are equiangular as well; 180/3=60° for each angle. No matter how we turn this triangle, the angles will have the same measure.
User Newtopian
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