Write a two column proof, a paragraph proof?

Question

Write a two column proof, a paragraph proof?

Given: X is the midpoint of AD and BC

Prove: AB ≅ DC

Answer 1

draw AD and BC so that the line segments intersect at X

connect points A and B and connect points D and C

AX≅XD  definition of midpoint

BX≅XC  definition of midpoint

<AXB and <CXD are vertical angles   two intersecting lines form vertical angles

<AXB≅<CXD  vertical angles are congruent

triangle AXB ≅ triangle DXC  SAS (side-angle-side)

AB≅DC  corresponding parts of congruent triangles are congruent