The coordinates of the vertices of triangles are listed in the options below. which is a right triangle? d(2, −3), e(−5, 7), f(6, −9) a(−3, 2), b(−3, −9), c(2, −4) p(−6, 2), q(1, 0), r(−3, −2) x(3, 1), y(−4, −3), z(−1, 8)

It's a bit of a bummer to have to work through all of these to find the answer. That a lot of slope calculations (or graphing, or whatever). When there are this many, a spreadsheet or other machine help can make it easier.

The correct choice is the last one, XYZ, with vertex X being where the right angle is located.


Slope of XY is 4/7; slope of XZ is -7/4. The product of these is -1, so those segments are at right angles.

Uneed to add them up 27+18+23=68