Angle Relationships

• 100°

• 80°

• 90°

• 180°

• 100°

• 80°

• 90°

• 180°

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

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°

Is it possible to find the complement angle of 103°? If so, what is it? 

• Yes, the complement angle is 77°

• Not possible. 

• Yes, the compliment angle is 83°

• Yes, the complement angle is 13°

What is the supplement angle to 42°?

• 48°

• 138°

• 100°

• Not possible

What is the complement angle to 12°?

• 78°

• 68°

• 168°

• 90°

2x and 10x are two angles that are supplementary. What do the angles measure? (Hint: 2x + 10x = 180)

• 30°,150°

• 5°,10°

• 15°, 75°

• 90°, 180°

_{These are Complementary angles. Find x.}

• 15

• 25

• 75

• 90