# Geometry for Elementary School/The Side-Angle-Angle congruence theorem

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In this chapter, we will discuss yet another congruence theorem, the Side-Angle-Angle congruence theorem, usually abbreviated as SAA.

## The Angle-Side-Angle congruence theorem[edit]

Given two triangles and such that their sides are equal, hence:

- The angle equals .
- The angle equals .
- The side equals .

Then the triangles are congruent and their other angles and sides are equal too. Note that the side must be the included side of the two angles.