Angle Relationships and Angle Algebra

Complementary angles always add up to

Which angles are vertical angles?

Which angle is a linear pair with \angle1 ?

Find the missing angle.  Find x.

• 20^o

• 70^o

• 160^o

• 180^o

Which are pairs of adjacent angles?

• ∠COB and ∠DOA

• ∠AOD and ∠AOC

• ∠COB and ∠AOD

• ∠BOD and ∠AOC

• Alternate Interior Angles

• Alternate Exterior Angles

• Same-side Interior Angles

• Corresponding Angles

• None of these

• Alternate Interior Angles

• Alternate Exterior Angles

• Same-side Interior Angles

• Corresponding Angles

• None of these

and are ___.

• Alternate Interior Angles

• Alternate Exterior Angles

• Same-side Interior Angles

• Corresponding Angles

• None of these