Use the relationship between supplementary angles ∠a
and ∠b. What is m∠a if m∠b=121°?(1 point)
Responses
31°
31 degrees
59°
59 degrees
121°
121 degrees
301°
Since supplementary angles add up to 180°, if ∠b is 121°, ∠a must be 180° - 121° = 59°. Therefore, the correct answer is 59°.
Angles a and b are supplementary angles. What is the value of m∠a if m∠b=43°?(1 point)
Responses
223°
223 degrees
137°
137 degrees
43°
43 degrees
47°