Question

A triangle has side lengths of 12 centimeters, 17 centimeters and 20 centimeters is it a right triangle

Answer 1

Answer: No, it's not a right triangle.

Step-by-step explanation

If we had a right triangle, then the Pythagorean theorem equation would be true when a = 12, b = 17, c = 20

So,

a^2 + b^2 = c^2

12^2 + 17^2 = 20^2

144 + 289 = 400

433 = 400

We arrive at a false equation.

This means a^2 + b^2 = c^2 is also false for the a,b,c values mentioned.

Therefore, this is NOT a right triangle.

Answer 2

Answer: No

Step-by-step explanation: You can just look at the units digits. 2^2+7^2 isn't equal to 0^2