Investigating Mathematics with C.a.R.

Henrico County Public Schools

Angles formed when a light hits a wall.

READ the instructions on the right and INTERACT with the C.a.R. applet below.

Investigation Steps

1. Move drag point A.
What is the relationship between angles A and B?

2. Move drag point B to Wall2.
What is the relationship between angles C and D?

3. What is the relationship between angles E and F?

4. What is the relationship between angles C and E?

5. What is the relationship between angles D and F?

Explain how you determined these relationships.

If the angle between the walls changed, would the relationships change between the angles? Use C.a.R. or Geogebra to explore this situation.