Answer:
143 degrees.
Step-by-step explanation:
m < A + m < B = 180 degrees. ( inside angles of a parallelogram). So:-
4x - 9 + x - 1 = 180
5x - 10 = 180
5x = 190
x = 38
So m < A = 4(38) - 9
= 143 degrees.
