Number 4: line XZ; number 5: theory of congruent triangles.
Answer: c
Step-by-step explanation:
Because it makes sense to me
The correct answer it would be is 2,3,4
since a square must be the same length on all sides to be a correct square, you can legit just multiply the length of one side times four to get the area.
3.2 x 4 = 12.6