Let A=(0,0), B=(1,3), and C=(3,3) be points in the Cartesian plane with the max distance Ds={|x1-x2|,|y1-y2|}. Prove that segment AB is congruent to segment AC. Sketch the two segments. Do they look congruent?

My problem: I am not seeing how they are congruent. How can I write a proof if they aren't actually congruent? What am I missing?