More Lessons for Grade 9
Videos, worksheets, games and activities to help Geometry students learn about transformations on the coordinate plane. In this lesson, we will look at rotation.
A rotation is an isometric transformation: the original figure and the image are congruent. The orientation of the image also stays the same, unlike reflections. To perform a geometry rotation, we first need to know the point of rotation, the angle of rotation, and a direction (either clockwise or counterclockwise). A rotation is also the same as a composition of reflections over intersecting lines.
Describing and drawing rotations of simple shapes in the plane.
Identify, Graph, and Describe Rotations
Learn to identify, graph, and describe rotations
Geometric Transformations - Rotations
This video reviews the rules used for rotating figures in a coordinate plane about the origin. At the 10:20 mark, there is a shortcut demonstrated that can be used to as an alternative method.
Rotate to landscape screen format on a mobile phone or small tablet to use the Mathway widget, a free math problem solver that answers your questions with step-by-step explanations.
You can use the free Mathway calculator and problem solver below to practice Algebra or other math topics. Try the given examples, or type in your own problem and check your answer with the step-by-step explanations.