Question

A triangle has sides with lengths of 8 miles, 15 miles, and 18 miles. Is it a right triangle?​

Answer 1

No

Explanation:

for it to be a right triangle, a² + b² = c². C must be the larger of the 3 sides, which in this case is 18. if you substitute 8 for a and 15 for b, you do not get C = 18, meaning that this is not a right triangle