# Complementary Angles Worksheets and Solutions

Objective: I know how to calculate complementary angles.

Fill in all the gaps, then press "Check" to check your answers. Use the "Hint" button to get a free letter if an answer is giving you trouble. You can also click on the "[?]" button to get a clue. Note that you will lose points if you ask for hints or clues!
1) Calculate the complementary angles for
a) 20˚
Complementary angle = degrees

b) 45˚
Complementary angle = degrees

c) 62˚
Complementary angle = degrees

d) 87˚
Complementary angle = degrees

2) a and b are complementary angles. If a = b find the value of a.
a = degrees

3) x and y are complementary angles. If x = 2y find the value of x and y.
x = degrees
y = degrees

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