Internal Angles

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°

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°

What is the measure of ONE interior angle in a regular triangle (3 sides)?

• 15°
• 30°
• 60°
• 90°

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

• 180° 
• 540° 
• 720° 
• 1080° 

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

• 720°

• 900°

• 1080°

• 1260°

Find the missing angle.

• 75
• 85
• 100
• 45

Find the measure of the angle x.

• 105
• 115
• 65
• 75