Adding Angle Sums

Find the measure of the indicated angle. 

• 26
• 36
• 85
• 144

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

• 180
• 360
• (n-2)180
• n(n-3)/2

• 145
• 55
• 35
• 45

Find the value of x.

• 138
• 540
• 64
• 128

What is the SUM of the angle measures in a 35-gon?

• 180°
• 5940°
• 1080°
• 169.71°

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

• 180°
• 360°
• 172°
• 93°

What is the sum of the exterior angles of a 20-gon?

• 180
• 360
• 3240
• 162

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

• 1440°
• 900°
• 1080°
• 1260°

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

• 90°
• 108°
• 120°
• 180°

Find the measure of angle b.

• b=51
• b=129