Learning goals: Teacher Facing Draw and label a diagram of a line segment rotated 90 degrees clockwise or counterclockwise about a given center. Generalize (orally and in writing) the process to reflect any point in the coordinate plane. Identify (orally and in writing) coordinates that represent a transformation of one figure to another. Full lesson plan (warm-up, activities, synthesis, cool-down prompt) from 8.1 Rigid Transformations and Congruence, Grade 8.