Question

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Answer 1

The Pythagorean Theorem applies to all right angle triangles. Therefore if you substitute the numbers, it should work out.

Pythagorean Theorem: a^2+b^2=c^2

Does 8^2+15^2=17^2?

8 squared plus 15 squared is 289. 17 squared is 289. Therefore #1 is a right triangle.

5^2+8^2=11^2

89 doesn’t equal 121 so #2 is not a right angle triangle