Complementary Angles Lesson

supplementary angles

• Two angles that sum to 180 degree

• Angles do not need to share a ray or be connected

Examples of supplementary angles

adjacent vs. non-adjacent

Multiple Select

Select all supplementary angles

• a + b = 180

complementary angles

• Two angles that sum to 90 degrees

• Angles do not need to share a ray or be connected

Examples of complementary angles

adjacent vs. non-adjacent

Multiple Select

Select all complementary angles

• a + b = 90

vertical angles

• The pairs of opposite angles made by two intersecting lines

• Share a vertex but no common ray

• vertical angles are congruent (equal)

Examples of vetical angles

angles 2 and 4 are the vertical angles

Multiple Choice

What is the measure of the vertical angle labeled 1?

• 162 degrees

• 90 degrees

• 18 degrees

• there's not enough information given

Multiple Choice

What is the measure of the vertical angle labeled 2?

• 162 degrees

• 90 degrees

• 18 degrees

• there's not enough information given

adjacent angles

• Two angles that share a common ray and vertex

• When two lines intersect, adjacent angles form supplementary angles

Examples of adjacent angles

Multiple Select

Which of the following are adjacent angles? Select all that apply.

• 1 and 2

• 1 and 3

• 3 and 4

• 2 and 4

• 4 and 1

Multiple Choice

Find the missing angle: y

• 85

• 106

• 16

• 74

Multiple Choice

Find the missing angle: z

• 85

• 106

• 16

• 74

Multiple Choice

Find the missing angle: x

• 85

• 106

• 16

• 74

Multiple Select

Which statements are NOT true? Select all that apply

• angle 8 = 65 degrees

• angles 5 and 8 are complementary

• angles 5 and 7 are vertical angles

• angle 5 = 105 degrees

• angle 8 = 115 degrees

Multiple Choice

Identify the type of angle shown....

• Acute

• Obtuse

• Reflex

• Right Angle

Multiple Choice

Identify the type of angle shown....

• Acute

• Obtuse

• Reflex

• Right Angle

Multiple Choice

Identify the type of angle shown....

• Acute

• Obtuse

• Reflex

• Right Angle

Multiple Choice

Identify the type of angle shown....

• Acute

• Obtuse

• Reflex

• Right Angle

Multiple Choice

What is the measurement of a right angle?

• 70

• 80

• 90

• 180

Multiple Choice

What angle pair is pictured?

• Alternate Interior Angles

• Supplementary Angles

• Vertical Angles

• Corresponding Angles

Multiple Choice

_{What is the measure of the following angle?}  

• 10 degrees.

• 40 degrees.

• 67 degrees.

• 168 degrees. 

Multiple Choice

_{What is the measure of the angle?}

• 110 degrees. 

• 140 degrees.

• 150 degrees.

• 170 degrees. 

Multiple Select

What is the name of this angle?  (MORE THAN 1 ANSWER)

• $$\angle$$ DEF

• undefinedFDE

• undefinedEDF

• undefinedFED

Multiple Select

What is the name of this angle? (MORE THAN 1 ANSWER)

• $$\angle$$ HGI

• undefinedHIG

• undefinedIHG

• undefinedGHI

Multiple Choice

Name an acute angle formed by intersecting lines in the picture:

• $$\angle$$ NRP

• undefinedRNP

• undefinedPRO

• undefinedRQO

Multiple Choice

Name an obtuse angle formed by intersecting lines in the picture:

• $$\angle$$ QRO

• $$\angle$$ PRN 

• undefinedNRQ

• undefinedRNQ

Multiple Choice

Which angle formed by intersecting lines is a right angle?

• $$\angle$$ MKN

• $$\angle$$ KMN

• $$\angle$$ PKM

• $$\angle$$ LKP

Multiple Choice

What is the relationship between the angles shown?

• Vertical Angles (Congruent)

• Adjacent Angles 

• Complementary Angles (Sum to 90)

• Supplementary Angles (Sum to 180)

Multiple Choice

Find the value of x.

• 15

• 16

• 18

• 19

Multiple Choice

∠1 and ∠3 can best be described as - 

• complementary angles

• supplementary angles

• vertical angles

• adjacent angles

Multiple Choice

∠1 and ∠2 can best be described as - 

• complementary angles

• supplementary angles

• vertical angles

Multiple Choice

What is an example of a pair of complementary angles?

• 13° and 45°

• 10° and 170°

• 81° and 9°

• 90° and 3°

Multiple Choice

What kind of angles are shown?

• complementary

• supplementary

• adjacent

• corresponding