Interior and Exterior Angles of Polygons

Front

What is the SUM of the angle measures in a DECAGON (10 sides)?

Back

1440°

Front

What is the name of a 12-sided polygon?

Back

Dodecagon

Front

How do the interior and exterior angles of a polygon relate?

Back

They are supplementary.

Front

Find the measure of EACH EXTERIOR angle of a Regular Pentagon.

Back

72°

Front

Is this shape a POLYGON? (Provide an example of a non-polygon)

Back

No, for example, a circle is not a polygon.

Front

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

Back

(n - 2) × 180°, where n is the number of sides.

Front

How many sides does a hexagon have?

Back

6 sides.

Front

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

Back

120°.

Front

What is the relationship between the number of sides and the sum of exterior angles of any polygon?

Back

The sum of exterior angles is always 360°.

Front

What is a regular polygon?

Back

A polygon with all sides and angles equal.