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Missing Angle: Complementary Angles

Missing Angle: Complementary Angles

Figure out the value of the missing angle using the fact that two angles are called complementary when their measures add to 90 degrees.
Worksheet
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Choose the right answer
Note: Two angles are called complementary when their measures add to 90 degrees.
Example: Angle DBA and angle ABC are supplementary angles. If angle ABC is 40°, what is angle DBA?
B
C
A
D
150°
140°
130°