Angles in Polygons

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

• S = 360

• S = (n - 2)*180

• 360/ext. angle

• 1 int. angle + 1 ext. angle = 180

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

• 1440 degrees

• 1080 degrees

• 900 degrees

• 1260 degrees

What is the SUM of the angle measures in a hexagon?

• 720 degrees
• 360 degrees
• 600 degrees

• 540 degrees

What is the sum of the angle measures in a triangle?

• 60

• 90

• 180

• 120

Find the value of x.

• 94

• 36

• 25

• 180

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

• S = (n-2) * 180 / n

• S = n * 180 / (n-2)

• S = (n-2) * 180

• S = 180 / n

What is the measure of ONE interior angle of a regular pentagon?

• 108 degrees
• 120 degrees
• 90 degrees
• 180 degrees

The measure of one angle of a regular polygon is 140 degrees. What is the name of the polygon? (HINT: SOLVE FOR n.)

• Decagon

• Heptagon

• Nonagon

• Hexagon

What is the measure of ONE interior angle of a regular hexagon?

• 120 degrees
• 60 degrees
• 108 degrees

• 80 degrees

A regular polygon has an INTERIOR angle with a measure of 60. How many

sides does it have? (Hint: Solve for n)

• 6

• 3

• 120

• 60