Identifying triangles

Front

What is a scalene triangle?

Back

A scalene triangle is a triangle in which all three sides are of different lengths and all three angles are of different measures.

Front

What is an isosceles triangle?

Back

An isosceles triangle is a triangle that has at least two sides of equal length and the angles opposite those sides are equal.

Front

What is an equilateral triangle?

Back

An equilateral triangle is a triangle in which all three sides are of equal length and all three angles are equal, each measuring 60 degrees.

Front

What does the HA postulate stand for?

Back

The HA (Hypotenuse-Angle) postulate states that if the hypotenuse and one angle of a right triangle are known, the triangle can be determined.

Front

What does the HL postulate stand for?

Back

The HL (Hypotenuse-Leg) postulate states that if the hypotenuse and one leg of a right triangle are known, the triangle can be determined.

Front

What is the SAS congruence postulate?

Back

The SAS (Side-Angle-Side) congruence 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 ASA congruence postulate?

Back

The ASA (Angle-Side-Angle) congruence postulate states 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 is the SSS congruence postulate?

Back

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

Front

What is the AA congruence postulate?

Back

The AA (Angle-Angle) congruence postulate states that if two angles of one triangle are equal to two angles of another triangle, the triangles are similar.

Front

What is a right triangle?

Back

A right triangle is a triangle that has one angle measuring 90 degrees.