Question

WILL GIVE BRAINLIEST TO CORRECT ANSWER! HELP ASAP! I AM ON A TIME LIMIT! Classify the following triangle as acute, right or obtuse. A triangle with side lengths of 12 in, 15 in, and 20 in. Explain why.

Answer 1

Use Pythagorean theorem
$20 ^{2}=12^{2}+15^{2}$

Solve
20^2 = 400
12^2 = 144
15^2 = 225
400 = 144 + 225
400 > 369

Since C^2 was greater than A^2 and B^2, your triangle is obtuse

Answer 2

This would be acute, since the triangle had no sides greater than 90 degrees. All of the angles are less than 90 degrees and an acute triangle is less than 90 degrees. Also if it was a right triangle at least two sides would have to be equal. Hope this Helps:)))