Flashcard: Polygon Angle Sum Theorem

Front

The sum of the interior angles of a polygon is __________________ where n is the number of sides.

Back

(n - 2)180

Front

Find the measure of one exterior angle in a REGULAR octagon.

Back

45 degrees

Front

Find the sum of the angle measures for a 42-gon.

Back

7200

Front

The measure of ONE exterior angle of a polygon is 9 degrees. This polygon has ____ sides.

Back

40

Front

A polygon with six sides is called a(n) ______________.

Back

hexagon

Front

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

Back

(n - 2)180 degrees

Front

How many sides does a polygon have if the sum of its interior angles is 1080 degrees?

Back

8 sides

Front

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

Back

108 degrees

Front

If a polygon has 12 sides, what is the sum of its interior angles?

Back

1800 degrees

Front

What is the measure of one exterior angle in a regular dodecagon (12-sided polygon)?

Back

30 degrees