the side lengths of a triangle are 5, 3 and 4. is this a right triangle?
A. Yes, because 3 ^2 + 4^2 = 5^2
B. No, because 3^2 + 4^2 not equal
C. yes, because 3^2 + 4^2 > 5^2
D. No, because 3 + 4 not equal to 5