Adjacent Angles and Vertical Angles

What are vertical angles?

• Angles that are adjacent to each other
• Angles that add up to 180°
• Angles that are opposite of each other when lines intersect
• Angles that add up to 90°

∠1 and ∠3 can best be described as - 

• complementary angles
• supplementary angles
• vertical angles
• adjacent angles

Are angles 1 and 3 adjacent, vertical, or neither?

• Adjacent
• Vertical
• Neither

Are angle ABC and angle CBD adjacent, vertical, or neither?

• Adjacent
• Vertical
• Neither

Are angles 3 and 4 adjacent, vertical, or neither?

• Adjacent
• Vertical
• Neither

Are angle DOC and angle EOA vertical, adjacent, or neither?

• Vertical
• Adjacent
• Neither

Which angles are vertical?

• B and 35°
• A and 35°
• 35° and 35°

Which angles are adjacent?

• B and A
• B and 111°
• 111° and 111°

What is the measure of ∠2?

• 38
• 58
• 71
• 142

Find the value of x.

• 14
• 60
• 35
• 180