This activity is designed to help students create the proofs for the Alternate Interior/ Exterior Angle Theorem, and the Consecutitive (Same Side) interior/ exterior angle theorem. It is a cut and paste activity.
The first 4 pages are the outlines for the four proofs, the last 4 pafes are tables of the steps and reasons. Note that there are 4 identical tables on each page (save trees when copying!). I make a set of the first 4 pages for each student, then copy and cut out the statements and reasons color coded for each proof, put them all in a baggie, and let kids figure it out!