ZA and ZB are supplementary angles. If m A = (7x + 10º and m
ZB = (7x – 26), then find the measure of ZA.
we know that
If two angles are supplementary, then tier sum is equal to 180 degrees
so
substitute the given values
7x+10+7x-26=180
14x=180+16
14x=196
x=14
FInd the measure of angle A