Congruent Transformations
Play around with the applet until you are clear about how everything works. You can change the shape of the blue triangle.
Questions to consider:
Is it possible that different transformations can lead to the same image?
Is it possible to show all transformations and line the four triangles up side by side?
Is it possible to show all transformations and create a symmetrical pattern?
Come up with some other questions of your own.