Protractor and Angles

What type of angle is shown?

• acute

• obtuse

• right

• straight

What is a obtuse angle

• It is an angle which is more than 180*

• It is an angle which is less than 90*

• It is an angle which is more than 90*

• It is an angle which is exactly 90*

If an angle is less than 90* what is the name of that angle

(Also EXPLAIN IT)

I can measure an angle with a device known as _______

Vertical angles are always

• acute

• total 180 degrees

• congruent (equal measures)

• adjacent angles

Which are pairs of vertical angles?

• ∠COB & ∠COA

• ∠AOD & ∠AOC

• ∠COB & ∠AOD

• ∠BOD & ∠AOD

How many types of angles are there

• 4

• 5

• 10

• 9

This is what kind of angle?

• obtuse

• right

• straight

• acute

What is the vertical angle to angle 4?

• Angle 2

• Angle 6

• Angle 8

• Angle 7

Supplementary angles always add up to