Use the relationship between supplementary angles La and Lb. What is m La if m2b = 121°?
(1 point)
Item 1
COURSE TOOLS
O 301°
O 121°
O 31°
O 59°
If angles La and Lb are supplementary, that means they add up to 180°.
We are given that the measure of angle Lb is 121° (m2b = 121°).
To find the measure of angle La (mLa), we can subtract 121° from 180°.
180° - 121° = 59°
Therefore, mLa is 59°.