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Missing Angle: Supplementary Angles
Figure out the value of the missing angle using the fact that two angles are called supplementary when their measures add to 180 degrees.
Choose the correct answer
Note: Two angles are called supplementary when their measures add to 180 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°
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