I thought this was a great activity to go along with these notes which require students to perform their own transformations, much like the pictures from Andrew's lesson.
When I've done this I like to have the students do the measuring themselves. This could be individually or in groups. I think it's a great way to reinforce the geometric facts of what it means to be a reflection/translation/rotation/dilation and helps to show what a congruence transformation means. Really great conversations happen about side lengths, distances, parallel lines, etc.