Understanding Complementary and Supplementary Angles

What total degree do complementary angles sum up to?

• 90 degrees

• 360 degrees

• 180 degrees

• 45 degrees

Tags

CCSS.7.G.B.5

What is the total sum of degrees for supplementary angles?

• 270 degrees

• 360 degrees

• 180 degrees

• 90 degrees

Tags

CCSS.7.G.B.5

What mnemonic can help remember the sum of degrees for complementary angles?

• The letter 'C' for 'circle'

• The letter 'C' for '90 degrees'

• The letter 'E' for 'equal'

• The letter 'S' for 'straight line'

Tags

CCSS.7.G.B.5

If one angle is 60 degrees, how many degrees would its complementary angle have?

• 60 degrees

• 120 degrees

• 30 degrees

• 90 degrees

Tags

CCSS.7.G.B.5

For two angles to be supplementary, they must add up to how many degrees?

• 360 degrees

• 270 degrees

• 180 degrees

• 90 degrees

Tags

CCSS.7.G.B.5

If one angle measures 130 degrees, how many degrees must the other angle measure to be supplementary?

• 70 degrees

• 60 degrees

• 40 degrees

• 50 degrees

Tags

CCSS.7.G.B.5

Which of the following is a correct example of supplementary angles?

• 90 degrees and 90 degrees

• 30 degrees and 60 degrees

• 60 degrees and 120 degrees

• 45 degrees and 45 degrees

Tags

CCSS.7.G.B.5

In an algebraic expression, if 2x + 30 and x + 10 are supplementary angles, what is the first step to find x?

• Add the expressions and set equal to 180

• Divide both sides by 2

• Set the expressions equal to each other

• Subtract 30 from both sides

Tags

CCSS.7.G.B.5

What is the value of x if 5x - 20 and 2x + 40 are complementary angles?

• 25

• 15

• 20

• 10

Tags

CCSS.7.G.B.5

After finding x = 10 in a problem involving complementary angles, how do you find the measures of the angles?

• Multiply x by each coefficient

• Substitute x back into the original expressions

• Add 90 to x

• Divide 90 by x

Tags

CCSS.7.G.B.5