Find out the general form for two column proofs, flow proofs, and paragraph proofs here. The site is very brief and discusses each type of proof using the same example.

This site offers a brief description and an example of a paragraph proof. And remember, "there is never just one way of stating a proof," so others are mentioned as well.

A geometry problem for students to use their mathematical reasoning skills to explain a right triangle property.

A "three star geometry problem" requiring knowledge of how to complete geometric proofs and some prior math skills to figure the shortest distance between the opposite corners of a cuboid.

A "three star geometry problem" requiring knowledge of how to complete geometric proofs. The problem explains what the order of a vertex is and asks for the proof of a generalization.

A "three star geometry problem" requiring knowledge of how to complete geometric proofs to prove that there are no more than five regular convex polyhedra.

A "three star geometry problem" requiring knowledge of how to complete geometric proofs and some prior math knowledge. This problem asks to prove that the mid points of any quadrilateral form a parallelogram.

A "three star geometry problem" - requiring the knowledge of what a cuboid is and a some knowledge of how to do proofs.

A "three star geometry problem" requiring knowledge of how to complete geometric proofs properties of parallelogram.

A "three star geometry problem" - requiring the knowledge of biconditional statements and how to prove such problems.

A history of the differences between Euclid's and Copernicus's methods of proving geometric ideas.