Exploring Complementary Angles through Equations

What is the total degree measure that defines two angles as complementary?

• 45 degrees

• 360 degrees

• 90 degrees

• 180 degrees

Tags

CCSS.7.G.B.5

In the context of complementary angles, what does the sum of the angles always equal to?

• 45 degrees

• 90 degrees

• 180 degrees

• 100 degrees

Tags

CCSS.7.G.B.5

What operation is used first to isolate the variable in a two-step equation?

• Subtraction

• Multiplication

• Division

• Addition

Tags

CCSS.7.EE.B.4A

If one angle is 20 degrees in a complementary pair, what equation represents the relationship including a variable x for the other angle?

• 20 + 2x = 90

• x - 20 = 90

• 20 + x = 90

• 90 - 20 = x

Tags

CCSS.7.G.B.5

After subtracting 20 from both sides of the equation 2x + 20 = 90, what is the next step to solve for x?

• Divide by 2

• Subtract another 20

• Add 20

• Multiply by 2

Tags

CCSS.7.EE.B.4A

What is the value of x when solving the equation 1/2x + 64 = 90?

• 52

• 26

• 104

• 13

Tags

CCSS.7.EE.B.4A

How do you solve for x in the equation 1/2x + 64 = 90?

• Add 64 to both sides

• Subtract 64 from both sides

• Divide both sides by 2

• Multiply both sides by 2

Tags

CCSS.7.EE.B.4A

What is the final step after solving the equation for x to find the measure of the unknown angle?

• Multiply x by 4

• Divide x by 4

• Substitute x into the angle expression

• Add x to 90

Tags

CCSS.4.MD.C.7

What is the measure of an angle if it is represented as 4x and x equals 15.5?

• 124 degrees

• 62 degrees

• 31 degrees

• 78 degrees

Tags

CCSS.4.MD.C.7

What is the correct expression for the unknown angle if the known angle is 28 degrees and they are complementary?

• 28 + x = 90

• 90 - 28 = x

• x - 28 = 90

• 28 + 4x = 90

Tags

CCSS.7.G.B.5