Let the measure of angle be 'x'
Since, the measure of the supplement of an angle is 84° less than the measure of the angle.
Therefore, measure of supplement of x = x - 84°
The measure of two supplementary angles is 180 degrees.
![x + x -84^\circ = 180^\circ](https://tex.z-dn.net/?f=x%20%2B%20x%20-84%5E%5Ccirc%20%3D%20180%5E%5Ccirc)
![2x -84^\circ = 180^\circ](https://tex.z-dn.net/?f=2x%20-84%5E%5Ccirc%20%3D%20180%5E%5Ccirc)
![2x =84^\circ + 180^\circ](https://tex.z-dn.net/?f=2x%20%3D84%5E%5Ccirc%20%2B%20180%5E%5Ccirc)
![2x =264^\circ](https://tex.z-dn.net/?f=2x%20%3D264%5E%5Ccirc)
![x =132^\circ](https://tex.z-dn.net/?f=x%20%3D132%5E%5Ccirc)
So, the measure of angle =![x =132^\circ](https://tex.z-dn.net/?f=x%20%3D132%5E%5Ccirc)
Its supplement = x - 84° = 132° - 84°
= 48°
So, the measure of supplement of angle is 48 degrees.