Interior and Exterior Angles of Polygons

Front

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

Back

(n−2)(180) where n is the number of sides.

Front

How do you find the measure of one interior angle of a regular polygon?

Back

[(n-2)(180)] / n where n is the number of sides.

Front

What is the formula for the measure of one exterior angle of a regular polygon?

Back

360/n where n is the number of sides.

Front

If a polygon has an exterior angle of 18 degrees, how many sides does it have?

Back

20 sides.

Front

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

Back

180 degrees.

Front

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

Back

360 degrees.

Front

How many sides does a polygon have if the sum of its interior angles is 720 degrees?

Back

8 sides.

Front

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

Back

Interior angle + Exterior angle = 180 degrees.

Front

If a regular polygon has an interior angle of 144 degrees, how many sides does it have?

Back

10 sides.

Front

What is the measure of each interior angle of a regular hexagon?

Back

120 degrees.