Geometry and Polygons

What is the sum of the degrees of the interior angles of a 19-gon?

• 3060 degrees

• 360 degrees

• 3420 degrees

• 342 degrees

If the sum of the interior angles of a polygon is 1800°, how many sides does it have?

• 11 sides

• 12 sides

• 10 sides

• 22 sides

What is the sum of the exterior angles of a 25-gon?

• 36 degrees

• 4140 degrees

• 360 degrees

• 414 degrees

Find x.

• 120 degrees

• 210 degrees

• 211 degrees

• 121 degrees

Find x.

• 13

• 26

• 260

• 360

If PQRS is a parallelogram, find the values of x and y.

• x = 15; y = 4

• x = 4; y = 15

• x = 24; y = 210

• x = 210; y = 24

If ABCD is a parallelogram, find the measurement of angle C.

• 74 degrees

• 19 degrees

• 47 degrees

• 91 degrees

What is the measure of an interior angle of a regular nonagon?

• 9 degrees

• 1260 degrees

• 14 degrees

• 140 degrees

What is the measure of each exterior angle of a regular decagon?

• 36 degrees

• 18 degrees

• 360 degrees

• 180 degrees

Find x.

• 8

• 7

• 16

• 112