jareesquivel jareesquivel 16-12-2020 Mathematics contestada Which of the given side lengths form a right triangle? A. 9 in., 12 in., 13 in. B. 15 in., 12 in., 9 in. C. 12 in., 9 in.. 17 in. D. 21 in., 12 in., 9 in.