# Definition:Similar Triangles

## Definition

Similar triangles are triangles whose corresponding angles are the same, but whose corresponding sides may be of different lengths.

Thus $\triangle ABC$ is similar to $\triangle DEF$:

$\angle ABC = \angle EFD$
$\angle BCA = \angle EDF$
$\angle CAB = \angle DEF$

## Also see

• Results about similar triangles can be found here.