Solving Missing Angle

Tell whether the angles are complementary or supplementary. Then find the value of x.

• Complementary, 15

• Supplementary, 16

• Complementary, 18

• Supplementary, 19

Tags

CCSS.7.G.B.5

Which equation could be used to find the missing angle, x?

• 40 + x = 180

• 2x + 40 = 180

• 40 + 2x = 90

• 40 + x = 90

Tags

CCSS.8.G.A.5

Enter the value of x, in degrees.

(enter only the number)

Tags

CCSS.8.G.A.5

Which equation could be used to find the value of the missing angle, x?

• 75 + x = 180

• 75 + x = 90

• 75 + 2x = 180

• 75 + 2x = 90

Tags

CCSS.7.G.B.5

What is the value of x?

(enter only the number)

Tags

CCSS.7.G.B.5

Which equation could be used to find the value of x?

• 80 + 45 + x = 90

• 125 + x = 180

Tags

CCSS.7.G.B.5

What is the value of x?

(enter only the number)

Tags

CCSS.8.G.A.5

What is the value of x?

Tags

CCSS.7.G.B.5

What is the value of x?

(enter only the number)

Tags

CCSS.7.G.B.5

Which equation could be used to find the value of x?

• x(x+20) = 180

• 2x + 20 = 180

• 2x + 20 = 90

Tags

CCSS.7.G.B.5