Angle Relationships

What term is used to describe a pair, or group, of angles that equal 180 degrees?

• Supplementary Angles
• Complementary Angles
• Vertical Angles
• Congruent Angles

If x = 20, what are the measures of these angles?

• 40° and 140°
• 35° and 145°
• 70° and 110°
• 60° and 120°

What is the value of "x"?

• 10
• 11
• 12
• 13

What is the measure of the missing angle?

• 76
• 86
• 166
• 156

Are these Vertical Angles?

• yes

• no

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.

Vertical Angles are always the same degree

• True

• False

• Sometimes

• Cannot determine

Find the missing angle

• 65

• 75

• 55

• 50

Find the missing angle.

• 72

• 68

• 90

• 78

What is an example of a pair of complementary angles?

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