Question

Triangle DEF is a dilation image of triangle ABC. What is the scale factor?

A. 2
B. 2/3
C. 1/4
D. 1/2

IMAGE: https://vie1160-912-pps.gradpoint.com/Resource/8766464,0/Assets/testitemimages/geometry_b/transformations/mc091-1.jpg

Answer 1

Use the distance formula and divide their lengths. That will tell you the scale factor for the larger triangle.

Answer 2

oh okay, one sec let my try doing that (so glad finally someone answered lol)

Answer 3

Do I use all three of them?

Answer 4

You can but using two sides should be enough

Answer 5

So the question is saying, based on what you wrote, that triangle ABC has shrunk by some factor to the triangle DEF. Again use the distance formula. Once you calculate the length two sides of each triangle. Ten take those lengths and divide them and you will find the scale factor.