Angles and Constructions

∠1 and ∠3 can best be described as - 

• complementary angles
• supplementary angles
• vertical angles
• adjacent angles

What is an example of a pair of complementary angles?

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

Find the value of x.

• 15
• 16
• 18
• 19

Tags

CCSS.7.G.B.5

Tell whether the angles are complementary or supplementary. Then find the value of x.

• Complementary; x=25
• Complementary; x=5
• Supplementary; x=25
• Supplementary; x=5

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 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

Find the missing angle.  Find x.

• 20^o
• 70^o
• 160^o
• 180^o

• x = 56
• x = 66
• x = 156
• x = 166

Solve for x

• 20
• 25
• 120
• 180

Tags

CCSS.7.G.B.5

Solve for x

• 5
• 90
• 25
• 10

Tags

CCSS.7.G.B.5