# 6.18: Recognizing Dilations

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**At Grade**Created by: CK-12
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Dilation

Dilation

To reduce or enlarge a figure according to a scale factor is a dilation.Quadrilateral

Quadrilateral

A quadrilateral is a closed figure with four sides and four vertices.Ratio

Ratio

A ratio is a comparison of two quantities that can be written in fraction form, with a colon or with the word “to”.Scale Factor

Scale Factor

A scale factor is a ratio of the scale to the original or actual dimension written in simplest form.Transformation

Transformation

A transformation moves a figure in some way on the coordinate plane.Vertex

Vertex

A vertex is a point of intersection of the lines or rays that form an angle.Rigid Transformation

Rigid Transformation

A rigid transformation is a transformation that preserves distance and angles, it does not change the size or shape of the figure.### Image Attributions

## Description

Learn to recognize dilations and use scale factor to determine measurements.

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## Date Created:

Jan 23, 2013## Last Modified:

Oct 20, 2015## Vocabulary

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