Interior and Exterior Angles of Triangles

Front

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

Back

The sum of the interior angles of a triangle is always 180 degrees.

Front

If one angle of 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 calculate the measure of an exterior angle?

Back

The measure of an exterior angle is equal to the sum of the two opposite interior angles.

Front

If two angles of a triangle are 45 degrees each, what is the measure of the third angle?

Back

The third angle measures 90 degrees.

Front

What is the relationship between interior and exterior angles at a vertex of a triangle?

Back

The exterior angle is equal to the sum of the two non-adjacent interior angles.

Front

If the angles of a triangle are represented as x, y, and z, what equation represents the sum of the angles?

Back

x + y + z = 180 degrees.

Front

What is the measure of an angle if its supplement is 70 degrees?

Back

The angle measures 110 degrees.

Front

What is the measure of an angle if its complement is 30 degrees?

Back

The angle measures 60 degrees.

Front

In a triangle, if one angle measures 60 degrees and another measures 50 degrees, what is the measure of the third angle?

Back

The third angle measures 70 degrees.