How many triangles can I make with side lengths of 15 in, 7 in, and 4 in?

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asked Mar 17, 2019 21.0k views

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Sondre · Answer 1 · 2019-03-22T13:21:21+0000

If those sides can form a triangle, the longest side must be less than the sum of the other 2 sides.

15 is NOT less than (7 + 4) and therefore no triangle can be formed.

How many triangles can I make with side lengths of 15 in, 7 in, and 4 in?

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