Polygons & Parallelograms

The sum of the interior angles of a polygon with n sides is

• 180n

• 360n

• 180(n - 2)

• 360(n - 2)

The sum of the exterior angles of a polygon with n sides is

• 180

• 360

• 180n

• 360n

What is the sum of the interiors angles of a 22-gon?

• 3600

• 3960

• 7200

• 1260

In a regular hexagon, what is the measure of each interior angle?

• 180

• 150

• 60

• 120

In a regular nonagon, what is the measure of each exterior angle?

• 60

• 40

• 36

• 30

Determine the value of x in the figure.

• 9

• 10

• 18

• 20

Determine the value of x in the figure.

• 10

• 18

• 36

• 40

Select the statements about parallelograms that are TRUE.

• The opposite sides of a parallelogram are parallel.

• The opposite sides of a parallelogram are congruent

• Consecutive sides of a parallelogram are congruent.

• Consecutive angles of a parallelogram are supplementary.

• A parallelogram can have exactly one right angle.

Select the statements about parallelograms that are TRUE.

• The opposite angles of a parallelogram are congruent

• The opposite angles of a parallelogram are supplementary

• If one angle of a parallelogram is a right angle, then all angles of the parallelogram are right angles.

• The consecutive sides of a parallelogram are congruent.

• The diagonals of a parallelogram bisect each other.

The sum of the interior angles of a parallelogram is 360.

• Always

• Sometimes

• Never