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Is a triangle with side lengths of 8 cm, 17 cm, and 15 cm a right triangle?

1 Answer

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Answer:

yes

Explanation:

You want to know if side lengths of 8 cm, 15 cm, and 17 cm will form a right triangle.

Pythagorean triple

The triple of side lengths {8, 15, 17} is called a Pythagorean triple, because it is an integer solution to the relationship described by the Pythagorean theorem:

a² + b² = c²

8² + 15² = 17²

64 + 225 = 289 . . . . . . true

This means these lengths will form a right triangle.

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Additional comment

Other triples commonly seen in algebra, trig, and geometry problems are ...

(3, 4, 5), (5, 12, 13), (7, 24, 25), (9, 40, 41)

It can be worthwhile to remember these (or keep the list handy).

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User Medo Ampir
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