Which of these four sets of side lengths will form a right triangle? Set 1 6 cm, 7 cm, square root of 12 cm Set 2 8 in., square root of 29 in., square root of 35 in. Set 3 square root of 3 mm, 4 mm, square root of 5 mm Set 4 9 ft, square root of 26 ft, 6 ft