Geometry A Unit 3 Review (Triangles)

Front

What does ASA stand for in triangle congruence?

Back

ASA stands for Angle-Side-Angle, a postulate used to prove that two triangles are congruent if two angles and the included side of one triangle are equal to two angles and the included side of another triangle.

Front

What does SSS stand for in triangle congruence?

Back

SSS stands for Side-Side-Side, a postulate used to prove that two triangles are congruent if 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

SAS stands for Side-Angle-Side, a postulate used to prove that two triangles are congruent if two sides and the included angle of one triangle are equal to two sides and the included angle of another triangle.

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 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 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°.

Front

What is a Right triangle?

Back

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

Front

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

Back

The sum of the interior angles in a triangle is always 180 degrees. You can find the measure of an unknown angle by subtracting the sum of the known angles from 180 degrees.

Front

What is the Triangle Sum Theorem?

Back

The Triangle Sum Theorem states that the sum of the interior angles of a triangle is always 180 degrees.

Front

What is the definition of congruent triangles?

Back

Congruent triangles are triangles that are identical in shape and size, meaning their corresponding sides and angles are equal.