ZA and B are supplementary angles. If ZA measures 45°, then what is the measure of ZB?
O 35
O 45
O 135
O 145

135°

Step-by-step explanation:

a supplementary angle is equal to 180°. since you already have the measure of ZA, all you need to do is subtract 45°, the measure of ZA, from 180°, the total measure of a supplementary angle, in order to figure out the measure of ZB.

180 - 45 = 135, therefore the measure of ZB = 135°.

yes the total will be same because in both of them the expression.is rearranged but their sign remains the same hence it hss just been shuffled