Transformations: Reflect about a line
This activity will explore what happens when you reflect a polygon over three specific lines.
1. Before exploring with the activity above record what you think will happen to the coordinates when you reflect a polygon over x=0, y=0, and y=x.
2. Using the check boxes, show and hide polygon reflections across each given line.
3. How did the coordinates of each point change when reflecting over x=0?
4. How did the coordinates of each point change when reflecting over y=0?
5. How did the coordinates of each point change when reflecting over y=0?
6. Write a general rule for each relfection using coordinate notation.