# Using the Pythagorean Theorem, is a triangle with sides measuring the following a right triangle: #12, 9, 15#?

##### 1 Answer

Nov 14, 2015

Yes

#### Explanation:

In a right angled triangle, the square on the hypotenuse (longest side - side opposite the right angle) is equal to the sum of the square on the other 2 sides.

Now since