PRACTICE BENCHMARK

Front

What are congruent triangles?

Back

Congruent triangles are triangles that have corresponding sides and angles that are equal.

Front

Which theorem can be applied to right triangles to prove congruence?

Back

The HL (Hypotenuse-Leg) theorem can be applied to right triangles.

Front

If an inscribed angle measures 30°, what is the measure of the central angle subtending the same arc?

Back

The measure of the central angle is 60°.

Front

What postulate is sufficient to prove triangle congruence with AB=DE, AC=DF, and ∠A=∠D?

Back

The ASA (Angle-Side-Angle) postulate is sufficient.

Front

What does the AAS postulate require?

Back

The AAS postulate requires two angles and a side not between them.

Front

What is the SSS postulate?

Back

The SSS (Side-Side-Side) postulate states that if three sides of one triangle are equal to three sides of another triangle, the triangles are congruent.

Front

What is the SAS postulate?

Back

The SAS (Side-Angle-Side) postulate states that if two sides and the included angle of one triangle are equal to two sides and the included angle of another triangle, the triangles are congruent.

Front

What is the relationship between inscribed angles and central angles?

Back

The measure of an inscribed angle is half the measure of the central angle that subtends the same arc.

Front

What is the definition of an isosceles triangle?

Back

An isosceles triangle is a triangle with at least two sides of equal length.

Front

What is a scalene triangle?

Back

A scalene triangle is a triangle with all sides of different lengths.