I got a "Plexiglas" cutter....looks like an exacto knife with a small hook on
the end. You drag the cutter till it scores the Plexiglas several times,
then place it the Plexiglas over the edge of the table and hit the cut side
like a karate chop. It breaks it quite easily into squares and rectangles.
(But I don't know how to cut it in curves shapes, probably with a saw.)