posted by Krissa .
Determine whether triangle DEF is congruent to triangle PQR given the coordinates of the vertices. Explain.
D(-6,1) E(1,2) F(-1,-4) P(0,5) Q(7,6) R(5,0)
If a triangle given by the matrix is dilated by a scale factor of 2, what will happen to the side lengths and angle measures of the triangle?