I have dipped into the Metaphysics pretty extensively, and I know that he uses a number of fascinating methods for decomposing arguments in that book. No wonder St. Thomas Aquinas read it while he was imprisoned. The book is a cerebral tour de force.
One of the above mentioned methods for decomposing arguments is geometrical. He draws analogies between the way three-dimensional figures are drawn and the way propositions about Plato's forms constructed, in order to shed a dubious light on the latter. I have to say that while I love his thinking style in that book, he's preaching to the choir really. I have never really liked Plato's forms, so I tend to tune out there and tune back in when he brings up the likes of Anaxagoras and Democritus.
So I'd like to know where else I can read that kind of 'shapely' argumentation, particularly where (else) Aristotle makes the most references to Euclidean geometry.