Solving Equations with Complementary, Supplementary, and Vertical Angles

Select the complementary angles.

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What is the value of angle b?

Find the missing angle.

• 72

• 68

• 90

• 78

Which phrase is incorrect?

• Complementary angles have to be adjacent.

• Supplementary angles equal 180°.

• Complementary angles can make a right triangle. 

• Complementary angles add up to be half of 180°.

Level 2: Find the pair of Complementary angles

• Angle FGE and Angle DGE

• Angle FGE and Angle KGC

• Angle CGD and Angle IGF

• Angle IJH and Angle HJG

What is the value of x?

*Note: drawing is not to scale

Two angles that complementary to the same angle or to congruent angles are congruent

• Always

• Sometimes

• Never

These angles are...

• Complementary

• Supplementary

• Neither

In the figure below, line EH and line segment FJ are perpendicular. What is the value of x?