Students will use rotations in this activity.

1. Compare the measures of the angles containing corresponding vertices and the center of rotation. a. Name the four angles you will compare. b. Use the ray and angle tools to draw and measure each of the angles from part A. c. What did you discover? 2. Describe the rotation that mapped Trap ABCD onto Trap A’B’C’D’. Make sure to give the center of the rotation, angle of rotation, and direction of rotation in your description.

Given the figure below, students will rotate the figure and answer follow up questions.

1. Rotate the figure above 135 degrees. 2. Using the polygon tool, connect the vertices together. 3. What happens when you move the point that is the center of the rotation? 4. Does changing the position of the point change the size or shape of the image? 5. Are the preimage and image the same shape and size? 6. What do you call two figures that are the exact same size and shape?