if xw is equal to wz then you can set up an equation using (g) as the lengths xw and wz
1g +1g+ 15 = 50
this is the perimeter equation
this simplifies to
2g +15=50
then you simplifiy using algebra
2g=50-15
2g=35
g=17.5
Can you please award me BRAINLIEST if my answer is satisfactory!
Thanks!