Intro to Polygons

What is the sum of the interior angles of a triangle?

• 60°

• 90°

• 120°

• 180°

What is the measure of ONE interior angle in a regular pentagon (5-sides)?

• 90°
• 108°
• 120°
• 180°

What is the sum of the interior angles of a nonagon (9 sides)?

• 1440°

• 900°

• 1080°

• 1260°

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

• 180° 
• 540° 
• 720° 
• 1080° 

Find the value of X

• 94
• 25
• 36
• 180

What is the name of a 7 sided polygon?

• hexagon
• heptagon
• octagon
• nonagon

How many sides does an octagon have?

• 8
• 7
• 6
• 9

What is the sum of the exterior angles in a decagon?

• 10
• 360
• 36
• 1440

Which formula is used to find the sum of the interior angles of a polygon?

• 180

• (n-2)180 ÷ n

• (n-2)180

• n(n-3)/2

If the measure of an exterior angle of a regular polygon is $24\degree$ , how many sides does the polygon have? 

• 12

• 13

• 14

• 15

• 16