Question

The measures of 2 angles of a triangle are given. Find the measure of the 3rd angle. Show and explain work.

37. y degree, (135 - y) degrees

My Answer: The back of the book said 45 degrees as the answer

37. 45 degrees, because 180 - 135 = 45 degrees

135 - y = 180

subtract 135 then add y so then; 180 = 135 + y

Answer 1

I assume that the two given angle measures are:

y degree and (135 - y) degrees.

I assume that these are interior angles of the triangle.