Congruent Triangles Review +

Front

What are congruent triangles?

Back

Triangles that are identical in shape and size, meaning all corresponding sides and angles are equal.

Front

What does SSS stand for in triangle congruence?

Back

Side-Side-Side; a criterion for triangle congruence stating that if three sides of one triangle are equal to three sides of another triangle, the triangles are congruent.

Front

What does ASA stand for in triangle congruence?

Back

Angle-Side-Angle; a criterion for triangle congruence stating that if two angles and the included side of one triangle are equal to two angles and the included side of another triangle, the triangles are congruent.

Front

What does AAS stand for in triangle congruence?

Back

Angle-Angle-Side; a criterion for triangle congruence stating that if 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 triangles are congruent.

Front

What does HL stand for in triangle congruence?

Back

Hypotenuse-Leg; a criterion for triangle congruence applicable to right triangles, stating that if the hypotenuse and one leg of one right triangle are equal to the hypotenuse and one leg of another right triangle, the triangles are congruent.

Front

What is the AAA criterion?

Back

Angle-Angle-Angle; while it shows that triangles have the same shape, it does not prove congruence since the triangles can be of different sizes.

Front

If two triangles are not congruent, what can we say about their corresponding sides and angles?

Back

At least one pair of corresponding sides or angles is not equal.

Front

How do you find the measure of an unknown angle in a triangle?

Back

Use the fact that the sum of the angles in a triangle is always 180 degrees.

Front

What is the relationship between corresponding angles in congruent triangles?

Back

Corresponding angles in congruent triangles are equal.

Front

If triangle ABC is congruent to triangle DEF, what can we say about their corresponding sides?

Back

AB = DE, BC = EF, CA = FD.