The relationship between supplementary angles is that they add up to 180 degrees. Since angle B is supplementary to angle AFN, we can subtract 121 degrees from 180 degrees to find the measure of angle AFN:
180° - 121° = 59°
So, the measure of angle AFN is 59°.
Use the relationship between supplementary angles, a and angle B what is M angle AFN angle B equals 121° would the answer be 301° 121° 59° or 31°
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