Which relationship is always true for the angles x, y, and z of triangle MNP? (4 points)
A triangle is shown with a leg extending past the top vertex. The vertices are labeled MNP. Angle y is located inside the triangle at vertex N. Angle z is located inside the triangle at vertex P. Angle x is located inside the triangle at vertex M.
x + z = y
y + z = x
x + y + z = 180 degrees
x + y + z = 90 degrees
The true statement for the angles x, y, and z of triangle MNP is:
x + y + z = 180 degrees.