Complementary/Supplementary Relationships

Find the missing angle.

• 60
• 70
• 50
• 140

Find the missing angle.

• 43
• 47
• 57
• 67

How are these angles related?

• Vertrical
• Complementary 
• Adjacent
• Supplementary 

Use the image to answer the question.

• Definition of complementary angles
• Definition of vertical angles
• Definition of supplementary angles
• Definition of right angle

What are complementary 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 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

Name the relationship between a and b:
complementary, supplementary, vertical

• Complementary
• Supplementary
• Vertical

Are these angles complementary, supplementary or neither?

• complementary
• supplementary
• neither

These angles are...

• Complementary
• Supplementary
• Neither

What is an example of a pair of complementary angles?

• 13° and 45°
• 10° and 170°
• 81° and 9°
• 90° and 3°