Polygon Angles and Parallelograms

Four angles of a pentagon are 110, 120, 67, and 50.  What is the measure of the 5th angle?

• 13

• 70

• 80

• 193

Find the value of X.

• 100° 

• 110° 

• 150° 

• 168° 

Find the value of X.

• 100

• 120

• 125

• 130

What is the measure of one interior angle of a regular 45-gon?

• 180°

• 360°

• 172°

• 8°

What is the number of sides of a regular polygon that has an interior measure of 120? 

• 5

• 6

• 7

• 8

If DE = 4x + 7 and EB = 5x - 4 in parallelogram ABCD, write an equation that could be used to find x.

• 4x + 7 = 5x - 4

• 4x + 7 + 5x - 4 = 180

• 4x +7 +5x - 4 = 360

Find the sum of the measures of the interior angles of a 43-gon.

• 7380

• 7740

• 180

• 43

Find the measure of each interior angle of a regular 43-gon. Round to the nearest tenth.

• 180

• 188.8

• 171.6

• 164

Find the sum of the measures of the exterior angles of a 43-gon.

• 180

• 360

• 7380

• 7740

The sum of the interior angles in a polygon is 1260 degrees. How many sides does the polygon have?

• 5

• 7

• 9

• 11