Question

the triangle below was dilated with a scale of 0.4. determine the coordinates of the dilated triangle enter your answers with parentheses and no spaces

Answer 1

A' (1.2, 2)

B' (0,-0.8)

C' (-2,-1.6)

1) We need to locate each coordinate for that triangle:

A (3,5)

B (0, -2)

C (-5, -4)

2) Since the scale factor is 0.4, then the image will be smaller than its pre-image. As there is no other information, let's assume it is centered at the origin.

So, we can write:

Pre-image 0.4 Image

A (3,5) 0.4 x (3,5) A' (1.2, 2)

B (0, -2) 0.4 x (0,-2) B' (0,-0.8)

C (-5, -4) 0.4 x(-5,-4) C' (-2,-1.6)

3) As we can see below: