Similar Polygons

Section 6-2

similar figures – when figures have the same shape but are different sizes

The symbol ~ means is similar to.

Defn. of Similar Polygons

Two polygons are similar iff if their corresponding angles are congruent and the measures of their corresponding sides are proportional.

scale factor - the ratio of 2 corresponding sides of 2 similar polygons

The scale factor is 3:2 or 2:3.

3 23 2

dilation – a transformation that reduces or enlarges a figure.

Joke Time

What means of transportation gives people a cold?

A choo-choo train

What job do hippies do?

They hold your leggies on.