We know that the angle to the right is 96 degrees so the opposite angle to the left is also 96. The total amount of angles are 360 degrees and we know 192 of the degrees so the remaining have to be divided into four because there are four other angles. To find the remaining we subtract 192 from 360 which is 168 we divide 168 by four because there are four angles left and we get the answer 42.