Question

Please help me if you know!! Thank you!!!!

Answer 1

Triangle GHI is the right angled triangle.

Explanation:

A right angled triangle follows the pythagoras theorem where,

h² = p² + b²

h is the longest side.

So,

15² = 12² + 9²

225 = 144 + 81

225 = 225

Hence this follow the pythagoras theorem and is a right angled triangle.