1. Teacher Note
If videos do not work as embedded, try using these links straight to YouTube, remember this only works under teacher login. I would recommend showing the videos a few times. It allows you to walk around and work with kids and those still struggling, just push play again.
Segment:
Angle:
If neither of those work, then maybe consider using your doc cam or overhead to demonstrate.
Helpful Handout:

2. Constructing Congruent Segments and Angles
Unit 9

3. How to: Construct Congruent Segment

4. How to: Construct Congruent Angle

5. Assignment