The side lengths of a triangle are 5,8 and 12 is this a right triangle?

A. no, because 5 + 8 ≠ 12.

B. yes, because 5² + 8² = 12².

C. no, because 5² + 8² ≠ 12².

D. yes, because 5² + 8² < 12².

The side lengths of a triangle are 5,8 and 12 is this a right triangle?

A. no, because 5 + 8 ≠ 12.

B. yes, because 5² + 8² = 12².

C. no, because 5² + 8² ≠ 12².

D. yes, because 5² + 8² < 12²

Step-by-step explanation:

Pythagoras theorem states c^2=a^2 + b^2

5^2=25

8^2=64

25+64=89