Angles and equations

What are supplementary angles?

• Angles that add up to 180°

• Angles that add up to 90°

• Angles that are equal to each other

• Angles that are opposite of each other when lines intersect

What are vertical angles?

• Angles that add up to 180°

• Angles that add up to 90°

• Angles that add up to 360°

• Angles that are opposite of each other when lines intersect and are equal

Two angles are complementary if the sum of their angles is 180^o.

• True

• False

Vertical angles are always

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

What kind of angles are shown?

• complementary
• supplementary
• adjacent
• corresponding

What is the equation to solve for x?

• 3x = 123

• 123 + 3x = 90

• 123 + 3x = 180

• 123 + 3x = 360

What is the supplement of 12°?

• 78°
• 180°
• 168°
• 90°

What is he equation to solve for x?

• 2x + 10 = 4x +20

• (2x + 10) + (4x +20) = 90

• (2x + 10) + (4x +20) = 180

• 180

Which are pairs of vertical angles?

• ∠COB & ∠COA
• ∠AOD & ∠AOC
• ∠COB & ∠AOD
• ∠BOD & ∠AOD

What is he equation to solve for x?

• (3x + 2) = 28

• (3x + 2) + 28 = 90

• 90

• (3x + 2) + 28 =180