iguanasimmons iguanasimmons 10-11-2022 Mathematics contestada In Triangle ‾QRS, ‾A is the midpoint of ‾QR, ‾B is the midpoint of ‾RS , and ‾C is the midpoint of ‾SQ. Also, QA=10, BR=15, and SQ=28. What is the perimeter of triangle ABC?