1.15 Adding Angles in a Triangle Practice

Front

What is the sum of the angles in a triangle?

Back

180 degrees.

Front

If one angle in a triangle is 90 degrees, what type of triangle is it?

Back

It is a right triangle.

Front

What is an exterior angle of a triangle?

Back

An exterior angle is formed by one side of the triangle and the extension of an adjacent side.

Front

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

Back

Subtract the sum of the known angles from 180 degrees.

Front

What is the measure of each angle in an equilateral triangle?

Back

Each angle measures 60 degrees.

Front

If two angles in a triangle are 50 degrees and 80 degrees, what is the measure of the third angle?

Back

The third angle measures 50 degrees.

Front

What is a remote interior angle?

Back

A remote interior angle is an angle that is not adjacent to the exterior angle and is inside the triangle.

Front

What is the relationship between corresponding angles when two parallel lines are cut by a transversal?

Back

Corresponding angles are equal.

Front

If the angles of a triangle are in the ratio 2:3:4, what are the measures of the angles?

Back

The angles measure 40 degrees, 60 degrees, and 80 degrees.

Front

What is the definition of an interior angle?

Back

An interior angle is formed by two sides of a triangle that meet at a vertex.