Students will learn how to draw points, line segments, and polygons rotated about the origin. Specifically, clockwise and counterclockwise rotations which are multiples of \(90^\circ.\) Here's an example. Students will also learn the relation between clockwise and counterclockwise rotations. Students should be shown that any combination of rigid transformations can be done solely by reflection, as shown in this video. As an interesting aside, demonstrate how an affine transformation can be used to divide an oval pizza equally amongst any number of people, as seen here.