Interior and Exterior Angles of Polygons

Front

What is an interior angle of a polygon?

Back

An interior angle is the angle formed between two sides of a polygon that meet at a vertex, located inside the polygon.

Front

What is an exterior angle of a polygon?

Back

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

Front

How do you calculate the sum of the interior angles of a polygon?

Back

The sum of the interior angles of a polygon can be calculated using the formula: (n - 2) × 180°, where n is the number of sides.

Front

What is the measure of one interior angle in a regular triangle?

Back

60°.

Front

What is the measure of one interior angle in a regular quadrilateral (square)?

Back

90°.

Front

What is the measure of one interior angle in a regular pentagon?

Back

108°.

Front

What is the measure of one interior angle in a regular hexagon?

Back

120°.

Front

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

Back

Interior and exterior angles are supplementary, meaning they add up to 180°.

Front

If one exterior angle of a polygon is 120°, what is the measure of the corresponding interior angle?

Back

60°.

Front

How many sides does a polygon have if the sum of its interior angles is 540°?

Back

5 sides (pentagon).