Honors Quiz Angles in Polygons

How many of the following polygons are CONCAVE?

• All are concave
• 1 is concave
• 2 are concave
• None are concave

What is the SUM of the INTERIOR angles of a 12-gon?

• 3600
• 1800
• 2160
• 12

A polygon has a sum of interior angle measures equal to 1620°. How many sides does the polygon have?

• 9
• 11
• 13
• 7

What is the SUM of the EXTERIOR angles of a hexagon?

• 360
• 120
• 60
• 720

Find the value of y.

• 125
• 135
• 140
• 110

Find the value of x.

• 110

• 90

• 130

• 120

What is the measure of one EXTERIOR angle of a regular octagon?

• 60
• 45
• 1080
• 135

What is the measure of one INTERIOR angle of a regular octagon?

• 60
• 45
• 1080
• 135

A regular polygon has an EXTERIOR angle with a measure of 60.  How many sides does it have?

• 6
• 120
• 3
• 60

Find the angle sum of the interior angles of the polygon.

• 180° 
• 540° 
• 720° 
• 1080°