Reflections

·      Create a stick figure in Geogebra ·      Create segment AB (label it) ·      Reflect stick figure   Highlight figure  Click on line reflection Question: What do you notice about the size and shape of the two stick figures?

Drag a point on the leg of the original stick figure. Question: What happens? Why? Drag other points of the pre-image or the image stick figure.

Question: Predict what will happen if you drag an endpoint of the mirror line segment (point A). Drag point A. Question: What happens? Why?

Predict what will happen if you drag point B. Drag point B. Question: What happens? Why?

Create a segment joining the hands of the two stick figures. Question: What do you notice about this line segment and the line of reflection?

Question: Based on your interactions with the sketch, provide a definition of a reflection.

Describe at least three different properties of reflections.