Unit 3 Vocabulary and Postulates

Flashcards about Triangle Congruency Postulates

SSS (Side-Side-Side)

Two triangles are congruent when each of their corresponding sides are congruent.

SAS (Side-Angle-Side)

Two triangles are congruent when two pairs of corresponding sides and the included angle are congruent.

ASA (Angle-Side-Angle)

Two triangles are congruent when two pairs of corresponding angles and the included side are congruent.

AAS (Angle-Angle-Side)

Two triangles are congruent when two pairs of corresponding angles and a non-included side are congruent.

HL (Hypotenuse-Leg)

Two right triangles are congruent when their corresponding hypotenuses and a pair of corresponding legs are congruent.

Transitive Property

States that if A = B and B = C, then A = C.

Reflexive Property

A figure or part of a shape is congruent to itself. (A = A)

Vertical Angles

Angles that are opposite each other when two lines intersect; they are congruent.

Alternate Exterior Angles

Angles on opposite sides of the transversal and outside the parallel lines; they are congruent.

Alternate Interior Angles

Angles on opposite sides of the transversal and inside the parallel lines; they are congruent.

Corresponding Angles

Angles in the same position relative to the transversal and parallel lines; they are congruent.

Linear Pair

Two angles that form a straight line (180 degrees); they are supplemental

Same Side Exterior Angles

Angles on the same side of the transversal and outside the parallel lines; they are supplemental

Same Side Interior Angles

Angles on the same side of the transversal and inside the parallel lines; they are supplemental