Complementary, Supplementary & Vertical Angles

Vertical angles are always

• acute

• total 180 degrees

• congruent (equal measures)

• adjacent angles

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 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°

• 50 degrees

• 140 degrees

• 40 degrees

If m<ABC = 78 degrees, then the measure of its complement is ​ (a)   and the measure of its supplement is ​ (b)  

• 12 degrees

• 102 degrees

• 90 degrees

• 180 degrees

• 168 degrees

• 50 degrees

• 140 degrees

• 40 degrees

Solve for x

• 20

• 25

• 120

• 180

Solve for x.

• 78

• 13

• 26

• 90

Find the value of "x".

• 5

• 90

• 25

• 10

When two or more angles are ​ (a)   , they add up to ​ 90 degrees. When two or more angles are ​ ​ (b)   , they add up to 180 degrees.

• complementary

• supplementary