Sum of Interior Angles in a Polygon

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 triangle (3 sides)?

• 60°
• 90°
• 120°
• 180°

Tags

CCSS.8.G.A.5

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

• 720°

• 900°

• 1080°

• 1260°

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

• 180° 
• 540° 
• 720° 
• 1080° 

Calculate the sum of the interior angle measures of a polygon with 25 sides.

• 360 degrees
• 4500 degrees
• 335 degrees
• 4140 degrees

Find the sum of the interior of angles in a dodecagon

• 1800

• 1080

• 1620

• 1260

What is the formula for the sum of the interior angles of a polygon?

• S = (n-2)
• S = (n-2) 180
• S = 360 / n
• S = (n-2) 360

Find the sum of the interior angles in a 15-gon

• 2000
• 2340
• 1875
• 1080

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

• 540°

• 720°

• 1080°

• 1440°

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

• 1080°

• 1440°

• 1620°

• 1800°