ANSWER:
80°
STEP-BY-STEP EXPLANATION:
Since the sides XZ and YZ are equal, the angle We know that the sum of all the angles is equal to 180 °, therefore:
[tex]\begin{gathered} 180=50+50+\text{YZX} \\ \text{YZX}=180-50-50 \\ \text{YZX = }80\text{\degree} \end{gathered}[/tex]
