A Rotation and a Reflection
- John Williams
A quadrilateral has been rotated about a point by an angle, and then reflected over a line. Drag the points that control the point of rotation, the angle of rotation and the line of reflection to explore the transformation. Use the tests described in Chapter 1 to find out whether or not the composition could have been formed by a single transformation. Pay careful attention to what might happen when the point of rotation lies on the line of reflection.
Restate the the conjecture you made on the patty paper regarding the composition of a rotation and a reflection.