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### Course: 8th grade (Illustrative Mathematics)>Unit 2

Lesson 3: Lesson 7: Similar polygons

# Dilations: scale factor

## Problem

Triangle triangle, A, prime, B, prime, C, prime is the image of triangle, A, B, C under a dilation with a scale factor of 2.
A first quadrant coordinate plane.A triange has vertices A at nine, five, B at nine, two, and C at seven, one.
What is the length of segment start overline, A, prime, B, prime, end overline?
units
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