Making your own lizard tank is a great project for someone who is not at all happy with the offerings of the local pet store. Most pet store cages come in a very dependable standard set of sizes and shapes. By building your own cage, you are limited only by your imagination.
Measure and cut with the saw, five equal squares of acrylic sheeting using the square to ensure squareness.
Use the acrylic cement to attach each piece to the others. Acrylic cement typically is a self-wicking liquid that runs under the seam as you apply it along the edges. Run a bead along each seam.