Question

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

Answer 1

Your answer is B. y+z=x.

Answer 2

Answer: B. y + z = x

Step-by-step explanation:

Given: A triangle ABC in which $\angle{B}$ is labelled as 'y' and $\angle{C}$ is labelled as 'z' and x is an exterior angle to $\angle{A}$  .

We know that there is a property of triangles that the measure of exterior angle is equal to the the sum of the measure of the opposite interior angles.

Therefore, x=y+z

Thus, B. is the right answer.