These are the notes for Geometric Proof that need to go into your notes.
Here is a example of a basic 2 column proof.
Source: http://www.youtube.com/watch?v=zQ6Y0fismDg
Here are a couple examples showing basic 2 column proofs.
Source: http://www.youtube.com/watch?v=Y4GDtDEwqWA
A start to writing proofs