Interior and Exterior angles

Front

What is an interior angle?

Back

An interior angle is an angle formed between two sides of a polygon that is inside the polygon.

Front

What is an exterior angle?

Back

An exterior angle is an angle formed between one side of a polygon and the extension of an adjacent side.

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

What is the sum of the exterior angles of any polygon?

Back

The sum of the exterior angles of any polygon is always 360 degrees.

Front

How do you find the measure of an exterior angle?

Back

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

Front

If one interior angle of a triangle is 60 degrees, what is the sum of the other two angles?

Back

The sum of the other two angles is 120 degrees.

Front

What is the relationship between interior and exterior angles?

Back

Interior and exterior angles are supplementary; they add up to 180 degrees.

Front

If a polygon has 5 sides, what is the measure of each interior angle?

Back

Each interior angle of a regular pentagon (5-sided polygon) is 108 degrees.

Front

What is the formula to calculate the sum of interior angles of a polygon?

Back

The sum of interior angles = (n - 2) × 180 degrees, where n is the number of sides.

Front

What is the measure of an exterior angle of a regular hexagon?

Back

Each exterior angle of a regular hexagon (6-sided polygon) is 60 degrees.