Lesson 9.5 Finding Unknown Angle Measures

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

Angles that are opposite each other and are congruent are

• Alternate Interior Angles

• Supplementary Angles

• Vertical Angles

• Corresponding Angles

What is the measurement of a right angle?

• 70
• 80
• 90
• 180

Tags

CCSS.4.G.A.1

• x = 118
• x = 108
• x = 28
• x = 58

Tags

CCSS.7.G.B.5

Solve for x

• 5
• 90
• 25
• 10

Tags

CCSS.7.G.B.5

Find the value of ∠A.

• 20 degrees
• 90  degrees
• 110 degrees
• 180 degrees

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 is the value of x?

• 15
• 16
• 18
• 19

Tags

CCSS.7.G.B.5

These angles are...

• Complementary
• Supplementary
• Neither

Tags

CCSS.7.G.B.5