Interior and Exterior Angles of Triangles

Front

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

Back

180 degrees.

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 measures of the two non-adjacent interior angles.

Front

If one interior angle of a triangle is 60 degrees and another is 70 degrees, what is the third angle?

Back

The third angle is 50 degrees.

Front

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

Back

Each exterior angle is equal to the sum of the two opposite interior angles.

Front

What is the formula for finding the sum of the interior angles of a polygon?

Back

(n - 2) * 180 degrees, where n is the number of sides.

Front

If a triangle has angles measuring 45 degrees and 55 degrees, what is the measure of the third angle?

Back

The third angle measures 80 degrees.

Front

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

Back

Each interior angle measures 60 degrees.

Front

In a triangle, if one angle measures 90 degrees, what type of triangle is it?

Back

It is a right triangle.

Front

What is the measure of an exterior angle if the two non-adjacent interior angles are 40 degrees and 50 degrees?

Back

The exterior angle measures 90 degrees.