http://www.youtube.com/watch?v=sm7K4IO8wQM
We repeated the activity but created the 3 angle bisectors of the triangle by folding. This time the intersection point (called the incenter) always met inside the triangle. This point is equidistant from the 3 sides of a triangle.
http://www.youtube.com/watch?v=iLW23cQROQs
Then we talked about reflection and line of symmetry and took notes on 5.7. Students are to complete WS 5.7 for tonight's homework.