Is 8/9 bigger than 2/3

Can someone check if i did this right since i really want to make sure it’s correct. if you do you so much

Complete each statement from the information given and the triangle criterion you used. if the triangles cannot be shown to be congruent, leave the box for the second triangle blank and choose for reason “cannot be determined.” carbon - regular hexagon. ∆can ≅ ∆ by

How do you do the foil method with polynomials?