Question

If an angle has a measure of 155°, what is the measure, in degrees, of an angle that is

supplementary to it?

Answer 1

Answer: The meausre is 25°

Explanation:

Supplementary angles add up to 180 degrees. So if one of the angles measure 155 degrees then the other has to be added to it for it to equal 180 degrees. We can represent that by the equation 155 + x =180 where x is the measing angle.

155 + x = 180 solve for x by subtracting 155 from both sides

-155 -155

x = 25