Supplementary angles add up to 180 degrees.
If the larger angle is 72 degrees larger than the smaller angle.
Let the smaller angle be x, the larger angle would be x + 72
Thus
x + 72 + x = 180
2x +72 =180
2x = 180 - 72 = 108
x = 54 degrees.
Therefore, the smaller angle is 54 degrees and the larger angle is
54 +72 degrees = 126 degrees.