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A triangle has sides with lengths of 15 kilometers, 17 kilometers, and 20 kilometers. Is it a right triangle?

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2 votes

Answer: no

Explanation:

use pythagorean theorem.

you can use a^2+b^2=c^2

the biggest value is always c(the hypotenuse) -> c=20

a and b would be 15 and 17(doesn't matter which is which)

plug it into the equation -> 15^2+17^2=20^2

225+289=400

514≠400

so no, it's not a right triangle

User Parakleta
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