Identifying Complementary and Supplementary Angles

What defines adjacent angles?

• Angles that do not touch each other

• Angles that sum up to 90 degrees

• Angles that sum up to 180 degrees

• Angles that share a common side and vertex

What is the sum of complementary angles?

• 360 degrees

• 180 degrees

• 45 degrees

• 90 degrees

How can you identify supplementary angles?

• They are always adjacent

• They form a straight line

• They share a common vertex only

• They form a right angle

What trick can help you remember the difference between complementary and supplementary angles?

• None of the above

• Both A and B

• The letter 'S' in supplementary stands for 'straight line'

• The letter 'C' in complementary stands for 'corner'

If one angle in a complementary pair is 3x and the other is 57 degrees, what is the value of x?

• 15

• 10

• 11

• 20

What is the sum of the angles in a complementary pair?

• 360 degrees

• 180 degrees

• 90 degrees

• 45 degrees

In a supplementary angle pair, if one angle is 125 degrees and the other is x + 5 degrees, what is the value of x?

• 55

• 65

• 60

• 50

What is the sum of the angles in a supplementary pair?

• 90 degrees

• 180 degrees

• 270 degrees

• 360 degrees

If two angles are supplementary and one angle is 6x + 15 degrees and the other is 141 degrees, what is the value of x?

• 4

• 5

• 3

• 6

If an angle in a complementary pair is 40 degrees and the other is 2x + 10 degrees, what is the value of x?

• 15

• 20

• 25

• 30