Use a ruler and a compass to construct a triangle xyz with xy =8cm, angle yxz =67.5 and xyz =45. Measure xz and yz
Did you even look at the solution I gave you here ?
https://www.jiskha.com/questions/1826326/constuct-triangle-xyz-such-that-xy-8cm-angle-yxz-105-and-angle-xzy-45
This one is similar to it, actually it is easier.