Question

what other information do you need to prove the triangles congruent using sas congruence?

Answer 1

the told you the two sides XW and XY are the same, from those little tick marks

Answer 2

They both share XZ as a side, so those sides are the same by reflexive property

Answer 3

you need the 2 angles between those sides to be equal too

Answer 4

angle WXZ and angle YXZ

Answer 5

then you will have side-angle-side congruency for the two triangles