Use the relationship between supplementary angles La and Lb. What is m La if m<b = 121°? (1 point)
If angles La and Lb are supplementary, it means that they add up to 180 degrees.
Therefore,
m La = 180° - m<b
m La = 180° - 121°
m La = 59°
Therefore,
m La = 180° - m<b
m La = 180° - 121°
m La = 59°