QZ-Triangles: Classify, Congruence, Isosceles

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 SSS stand for in triangle congruence?

Back

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

Front

What does SAS stand for in triangle congruence?

Back

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.

Front

What does ASA stand for in triangle congruence?

Back

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.

Front

What does AAS stand for in triangle congruence?

Back

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.

Front

What is an acute triangle?

Back

A triangle that has all three angles measuring less than 90 degrees.

Front

How many acute angles must an acute triangle have?

Back

3 acute angles.

Front

What is an isosceles triangle?

Back

A triangle that has at least two sides of equal length.

Front

What is the sum of the interior angles of a triangle?

Back

180 degrees.

Front

What is the definition of a right triangle?

Back

A triangle that has one angle measuring exactly 90 degrees.