Dilations and Similar Polygons

Betzaida Martinez

Similar Polygons

Similar polygons are polygons that have congruent angles and corresponding sides that are proportional to one another. It is important to know how to identify similar figures because they can be used in real world situations like finding the height, width, or length of something.

Scale Factor as a Ratio

A ratio shows the relative sizes of two or more values. Each pair of corresponding sides of similar polygons will have equal ratios. Scale factors are usually written as ratios but in some cases are written as fractions and can be found by diving the larger side length by the smaller length.
Similar Figures - Similar Polygons - MathHelp.com