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Geometry
Angles
Supplementary angles
Angles a and b are supplementary angles. What is the value of m a if m b = 43°? (1 point)
223°
47°
43°
137°
1 answer
If angles a and b are supplementary angles, their sum is 180°. Therefore, if m b = 43°, then m a = 180° - 43° = 137°. So the value of m a is 137°. Therefore, the correct answer is 137°.
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