Search "congruent"

Finding congruent triangles

Using the SSS, ASA, SAS, and AAS postulates to find congruent triangles

Congruent triangle example 2

Showing that segments have the same length

Congruent legs and base angles of isosceles triangles

Showing that congruent legs imply equal base angles and vice versa

Equilateral triangle sides and angles congruent

Showing that all of the angles of an equilateral triangle are 60 degrees

Figuring out all the angles for congruent triangles example

Another example of using congruency to figure out a bunch of angles