Review #6

Find the measure of ONE interior angle of a regular dodecagon.

• 150
• 120
• 1800
• 20

The sum of the interior angles of a polygon is __________________ where n is the number of sides.

• (n - 2)180
• (n - 1)180
• 360
• (n - 3)(180)

Find the sum of the interior angles of a nonagon.

• 1260
• 900
• 1620
• 180

Find the measure of one interior angle in regular 25-gon. Round your answer to the nearest tenth if necessary.

• 164.3⁰

• 167.1⁰

• 165.6⁰

• 166.7⁰

Find the measure of one interior angle of this REGULAR polygon.

• 130

• 140

• 150

• 160

What is the sum of the exterior angles?

• 90 degrees
• 180 degrees
• 540 degrees
• 360 degrees

Given a regular polygon. Determine the value of x?

• x= 450 degrees
• x= 90 degrees
• x= 360 degrees
• x= 180 degrees

Given a regular polygon. Determine the value of x.

• 40 degrees
• 180 degrees
• 60 degrees
• 390 degrees

Which is NOT a property of a parallelogram?

• Diagonals bisect each other
• Diagonals are congruent
• Both pairs of opposite sides are parallel
• Both pairs of opposite angles are congruent

The opposite angles of a parallelogram are ...

• complementary
• congruent
• supplementary
• perpendicular