Question

Given that HIJK is a parallelogram, find measurement of angle J

Answer 1

Answer: Angle H is also 143° while angle I is 37°

Answer 2

Interior angles of a parallelogram have opposite angles identified as "a" and "b".

angles K and I are "a" 
angles H and J are "b" 

"a" and "b" are supplementary angles, they sum up to 180°.

Angle J is supplementary angle of angle K. Its measure is 143°.
180° - 37° = 143°

Angle H is also 143° while angle I is 37°