what is the perimeter of...

triangle pqr with vertices p (-2, 9), Q (7, -3) and R (-2, -3) in a coordinate plane?
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triangel from 3 points...(-2,9), (7,-3), (-2, -3) . . . me got a simpel rite triangel . . . side lengths=9, 12, 15, so rim leng=36 . . . angels=90, 53.1301, 36.8699 deg . . . yu otta reknize the 3-4-5 triangel
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