Answer :
the measure of the supplementary angle is 7 degrees.
To find the measure of a supplementary angle, we must remember that two angles are supplementary if the sum of their measures is 180 degrees.
We need to find the second angle such that:
[tex]\angle A + \angle B = 180[/tex]
Putting values we get:
[tex]173 + \angle B = 180\\\\ \angle B = 180 -173\\\\\angle B = 7[/tex]
So, the measure of the supplementary angle is 7 degrees.
180-173=7
the supplementary angles are 173 degrees and 7 degrees because they both add up to 180
the supplementary angles are 173 degrees and 7 degrees because they both add up to 180