Question

I NEED HELP WITH THIS SUBJECT
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Answer 1

Formula for right triangles is Shorter side A x Shorter side A + Shorter side B x Shorter Side B = Longest side +Longest side

9 x 9 = 81

12 x 12 = 144

144 + 81 = 225

15 x 15 = 225 so it is a right triangle.

Explanation:

Answer 2

B: right

Explanation:

9^2 + 12^2 = 15^2