Triangle Congruence Flashcard

An angle bisector is a line or ray that divides an angle into two equal parts.

SSS stands for Side-Side-Side, a criterion for triangle congruence where all three sides of one triangle are equal to the three sides of another triangle.

ASA stands for Angle-Side-Angle, a criterion for triangle congruence where two angles and the included side of one triangle are equal to two angles and the included side of another triangle.

The Vertical Angles Theorem states that when two lines intersect, the opposite (or vertical) angles are equal.

The Transitive Property states that if two quantities are equal to the same quantity, then they are equal to each other.

A midpoint is a point that divides a line segment into two equal parts.

AAS stands for Angle-Angle-Side, a criterion for triangle congruence where two angles and a non-included side of one triangle are equal to two angles and the corresponding non-included side of another triangle.

The Alternate Interior Angles Theorem states that if two parallel lines are cut by a transversal, then each pair of alternate interior angles is equal.

SAS stands for Side-Angle-Side, a criterion for triangle congruence where two sides and the included angle of one triangle are equal to two sides and the included angle of another triangle.

Congruence in geometry means that two figures have the same shape and size.