Answer:
The measure of Angle B = 82
Explanation:
⁕We have to calculate the angle for A.
‣Notice how angles A is on a straight angle, a straight angle equals 180 degrees by the way.
⁕You are going to subtract 143 from 180.
![180 - 143 = 37](https://img.qammunity.org/2022/formulas/mathematics/high-school/f5hvh1veg9hgtbo8j93ao2exrc4gtcfi7m.png)
‣So the angle of A is 37. A triangle equals 180 degrees.
⁕You are going to combine angle A and Angle C and subtract it from 180, to find angle B.
![61 + 37 = 98 \\ 180 - 98 = 82](https://img.qammunity.org/2022/formulas/mathematics/high-school/66nybru5li33grrzr0clxz65fwwo9gi882.png)
‣Therefore, angle B equals 82.