In this lesson, we are going to go over rotations. Rotations are a type of congruence transformation. This is the third one, in which an image moves in a circular motion to a new position. There are two ways in which you can perform a rotation. The first is a composite of two successive reflections over two intersecting lines. The second way to perform a rotation is using the angle formed by intersecting lines. In a given rotation, the angle of rotation is twice the measure of the angle formed by the intersecting lines of reflection.
*These practice questions are only helpful when you work on them offline on a piece of paper and then use the solution steps function to check your answer.
Lecture Slides are screen-captured images of important points in the lecture. Students can download and print out these lecture slide images to do practice problems as well as take notes while watching the lecture.