Question

Which relationship is always true for the angles x, y, and z of triangle ABC?

A triangle is shown with a leg extending past the top vertex. The vertices are labeled ABC. Angle y is located inside the triangle at vertex B. Angle z is located inside the triangle at vertex C. Angle x is located outside the triangle between side AC and the extended leg.

x + z = y

y + z = x

x + y + z = 180 degrees

x + y + z = 90 degrees

Answer 1

B? @Hero

Answer 2

Correct

Answer 3

yes its correct like Hero said

and I think it's called the Exterior Angles theorem if I remember correctly

Answer 4

Oh, okay thank you. I wasn't sure if I was correct or wrong.