Ariel completed the work below to show that a triangle with side lengths of 9, 15, and 12 does not form a right triangle. mc018-1.jpg is ariel’s answer correct? no, ariel should have added 122 and 1

Ariel answer is wrong.

Step-by-step explanation:

Given that Ariel had done a Math problem for a triangle with sides

9,15 and 12.  She concluded that these sides are not that of a right triangle.

To check whether Ariel is right:

Greater side = 15

Hence greatest angle will be opposite 15

Let us check pythagorean theorem

smaller sides are 9 and 12

Square and add them

9 square +12 square = 81+144 = 225 =15 square

We find that Pythagorus theorem is satisfied

Hence it is concluded that the triangle is right angled and Ariel was wrong