Math 2 Unit 4 Practice

Find the measure of ONE interior angle for a regular Octagon.

• 108°

• 120°

• 135°

• 144°

What is the sum of the exterior angles for a Heptagon?

• 360 degrees

• 540 degrees

• 720 degrees

• 900 degrees

What is the sum of the interior angles for a Decagon?

• 720°

• 900°

• 1440°

• 1260°

What is the measure of ONE exterior angle for a regular Nonagon?

• 30 degrees

• 40 degrees

• 140 degrees

• 60 degrees

m∠1 = ______

• • 40°

• 90°

• 45°

• 30°

Find the value of x

• x = 15.124

• x = 23.125

• x = 25.76

• x = 30

Find the value of x

• x = 50

• • x = 96

• x = 70

• x = 80

Find the value of a° and b°

• a° = 20, b° = 160

• a° = 140, b° = 40

• a° = 40, b° = 140

• a° = 120, b° = 60

On a certain vehicle, one windshield wiper is affixed to a swing arm which is 72 cm long from pivot point to wiper-blade tip. If the swing arm turns through 105°, what area of the windshield, to the nearest square centimeter, is swept by the wiper blade?

• 4,750 cm²

• 3,168 cm²

• 2,376 cm²

• 5,184 cm²

Find the arc length of a circle with a radius of 8 inches and a central angle of 120°.

• 16π/3 inches

• 32π/3 inches

• 8π inches

• 16π inches