Answer:
a = 144
b = 67
Explanation:
Where a transversal meets parallel lines, consecutive interior angles are supplementary.
Angles
a° +36° = 180° . . . . . . consecutive angles are supplementary
a = 144 . . . . . . . . . . divide by ° and subtract 36
b° +113° = 180° . . . . . . consecutive angles are supplementary
b = 67 . . . . . . . . . . divide by ° and subtract 113