Preview Assignment: Angle relationships

This is what kind of angle?

• obtuse
• right
• straight
• acute

Vertical angles are always

• acute
• total 180 degrees
• congruent (equal measures)
• adjacent angles

Supplementary angles always add up to

What type of angles are these?

• Adjacent Angles

• Linear Pair

• Complementary Angles

• Supplementary Angles

• Vertical Angles

Which angles are vertical angles?

• $\angle8\ \ and\ \angle7$

• $\angle8\ and\ \angle6$

• $\angle8\ and\ \angle5$

Find the missing angle.  Find x.

• 20^o
• 70^o
• 160^o
• 180^o

∠7 and ∠8 are _______________

• Vertical

• Nothing

• Adjacent

• Supplementary

What angle is vertical to angle 2?

• ∠4

• ∠1

• ∠2

• ∠5

Which are pairs of vertical angles?

• ∠COB and ∠COA

• ∠AOD and ∠AOC

• ∠COB and ∠AOD

• ∠BOD and ∠AOD

What is the value of x?

• 37
• 72
• 108
• 18