Interior and Exterior Angles of Polygons

Front

What is a polygon?

Back

A closed shape with only straight sides.

Front

What is the measure of ONE interior angle of a regular octagon?

Back

135°.

Front

A polygon can have curved sides. True or False?

Back

False.

Front

Is the figure a polygon? Is it convex or concave?

Back

Polygon, convex.

Front

What is the SUM of the angle measures in a nonagon (9 sides)?

Back

1260°.

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 pentagon?

Back

108°.

Front

What is a convex polygon?

Back

A polygon where all interior angles are less than 180°.

Front

What is a concave polygon?

Back

A polygon that has at least one interior angle greater than 180°.