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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)
43°
223°
137°
47°
1 answer
Since a and b are supplementary angles, their sum is 180 degrees. So, if m∠b = 43°, then m∠a = 180° - 43° = 137°. Therefore, the value of m∠a is 137°. Answer: 137°
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