Using Algebra to Find Missing 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

Tags

CCSS.7.G.B.5

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.

Tags

CCSS.7.G.B.5

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°

Tags

CCSS.7.G.B.5

What is the complement angle to 30°?

• 60°
• 30°
• 150°
• 230˚

Tags

CCSS.7.G.B.5

What is the supplement angle to 42°?

• 48°
• 138°
• 100°
• Not possible

Tags

CCSS.7.G.B.5

What is the measure of ∠2?

• 38
• 58
• 71
• 142

Tags

CCSS.7.G.B.5

How are these angles related?

• Vertrical
• Complementary 
• Adjacent
• Supplementary 

Tags

CCSS.7.G.B.5

Find the missing angle.

• 60
• 70
• 50
• 140

Tags

CCSS.7.G.B.5

Find the missing angle.

• 47
• 37
• 57
• 137

Tags

CCSS.7.G.B.5

If the measure of ∠2 is 83°, what is the measure of ∠3?

• 7°
• 17°
• 83°
• 97°

Tags

CCSS.7.G.B.5