Mrs. Kim's Interior and Exterior Angles of Polygons

Front

What is a polygon?

Back

A closed shape with only straight sides.

Front

What is the difference between convex and concave polygons?

Back

Convex polygons have all interior angles less than 180°, while concave polygons have at least one interior angle greater than 180°.

Front

What is the name of a 7-sided polygon?

Back

Heptagon.

Front

What is the sum of the angle measures in a decagon (10 sides)?

Back

1440°.

Front

Can a polygon have curved sides?

Back

False.

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°.

Front

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

Back

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

Front

What is the name of a 6-sided polygon?

Back

Hexagon.

Front

What is the name of an 8-sided polygon?

Back

Octagon.