Interior/Exterior Angles of Triangles

Front

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

Back

180 degrees

Front

If one angle of a triangle is 90 degrees and another is 45 degrees, what is the measure of the third angle?

Back

45 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 of a triangle?

Back

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

Front

If the interior angles of a triangle are 60 degrees, 70 degrees, and x degrees, what is the value of x?

Back

50 degrees

Front

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

Back

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

Front

In a triangle, if one angle measures 80 degrees, what is the maximum possible measure of the other two angles?

Back

The maximum possible measure of the other two angles is 100 degrees each.

Front

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

Back

Each angle measures 60 degrees.

Front

If a triangle has angles measuring 30 degrees and 60 degrees, what is the measure of the third angle?

Back

90 degrees

Front

What is the formula to find the measure of an interior angle of a regular polygon?

Back

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