Question

Look at △ABC and △DEF on this coordinate grid.

Which transformation shows that △ABC and △DEF are similar?

A
a dilation of △ABC with a scale factor of 2

B
a translation of △ABC 1 unit up and 3 units to the right

C
a dilation of △ABC with a scale factor of 12

D
a translation of △ABC 3 units up and 3 units to the right

Answer 1

A

Explanation

Dilation: A shape is scaled up or down by a scale factor

Translation: A shape is moved on a coordinate plane to a different spot.

A works because lets you one side (the bottom side). The bottom has a length of 3, and the bigger one has a length of 6, showing a scale factor of 2.