Unit 3 Pretest: Congruent Triangles

Front

What is the definition of congruent triangles?

Back

Triangles that have the same size and shape, meaning their corresponding sides and angles are equal.

Front

What does SAS stand for in triangle congruence?

Back

Side-Angle-Side: A method to prove triangles are congruent if two sides and the included angle of one triangle are equal to the corresponding parts of another triangle.

Front

What does ASA stand for in triangle congruence?

Back

Angle-Side-Angle: A method to prove triangles are congruent if two angles and the included side of one triangle are equal to the corresponding parts of another triangle.

Front

What does AAS stand for in triangle congruence?

Back

Angle-Angle-Side: A method to prove triangles are congruent if two angles and a non-included side of one triangle are equal to the corresponding parts of another triangle.

Front

What does SSS stand for in triangle congruence?

Back

Side-Side-Side: A method to prove triangles are congruent if all three sides of one triangle are equal to the corresponding sides of another triangle.

Front

What is CPCTC?

Back

CPCTC stands for 'Corresponding Parts of Congruent Triangles are Congruent', a principle used after proving triangles are congruent.

Front

What is the Hypotenuse-Leg (HL) theorem?

Back

A method to prove the congruence of right triangles if the hypotenuse and one leg of one triangle are equal to the hypotenuse and one leg of another triangle.

Front

How do you determine if two triangles are congruent using the SSS criterion?

Back

Measure all three sides of both triangles; if all three pairs of corresponding sides are equal, the triangles are congruent.

Front

How do you determine if two triangles are congruent using the ASA criterion?

Back

Measure two angles and the included side of one triangle; if they are equal to the corresponding parts of another triangle, the triangles are congruent.

Front

What is the significance of the included angle in SAS?

Back

The included angle is the angle formed between the two sides being compared; it must be equal for the triangles to be congruent.