Answer:
1) no, it is not a right triangle. 3² + 4² ≠ 25²
2) no, it is not a right triangle. 38² + 77² ≠ 86²
3) no, it is not a right triangle. 10² + 36² ≠ 37²
4) yes, it is a right triangle. 30² + 40² = 50²
5) yes, it is a right triangle. 8² + 15² = 17²
6) yes, it is a right triangle. 18² + 24² = 30²
7) no, it is not a right triangle. 5.3² + 7.9² ≠ 8.1²
8) yes, it is a right triangle. 10² + 24² = 26²
