Question

the image of triangle DEF after 2 transformations has vertices at D' (3, 3) E' (6, 3) and F' (3, -6). The preimage has the vertices of D (-1, 1) E (-1, 2) F(2, 1). if the said triangles are congruent, determine what to transformation map triangle DEF onto triangle D'E'F'.​

Answer 1

Length of DF is 3 units (-1 to 2 = 3)

Length of D’F’ is 9 units (-3 to 6 =9)

The new image is 3 times larger than the original one.

The original image was scaled by a factor of 3.

It was then rotated 90 degrees about the origin.