Formulas Involving Polygons

What is the formula to find the sum of the angles of a polygon?

• (n - 2)180

• (n - 2) 360

• 360(n + 2)

• 180(n + 2)

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

• 180° 
• 540° 
• 720° 
• 1080° 

Find the measure of the angle x.

• 105
• 115
• 65
• 75

What is the SUM of the angle measures in a nonagon (9 sides)?

• 1440°
• 900°
• 1080°
• 1260°

What is the SUM of the angle measures in a hexagon (6 sides)?

• 720°
• 1080°
• 600°
• 540°

What is the SUM of the angle measures in a triangle (3 sides)?

• 60°
• 90°
• 120°
• 180°

Tags

CCSS.8.G.A.5

What is the formula for finding ONE interior angle of a polygon?

• S= (n-2)180
• S= (n-180)2
• S= (n-2)180/n
• S= (n - 180)2/n

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

• 90°
• 108°
• 120°
• 180°

What is the measure of ONE interior angle in a regular hexagon (6 sides)?

• 60°
• 80°
• 108°
• 120°

Which of these figures are considered polygons?

• a, b, c, d
• b, d, e, f
• a, b, c
• a, e, f

Tags

CCSS.2.G.A.1