Answer:
137°
Step-by-step explanation:
If we know that a set of angles form one of these special relationships, we can determine the measure of the other angle. To determine the supplement, subtract the given angle from 180. 180 - 43 = 137° The supplement of 43° is 137°.
And always remember this applies to you too like honestly you’re amazing for doing this
It is true because the y and x will always be the same number and a vertical line has no slope thus equaling 0,0