# Warm Up - Miss Pintek's Math Website Warm Up Tell whether the shaded figure is a reflection of the non-shaded figure. 1. 3. 2.

4. Lesson 3-3: Rotations I can: Vocabulary: Define and identify rotations.

Identify corresponding sides. Understand prime notation to describe an image after a rotation. Identify center of rotation. Identify direction and degrees of a rotation.

Rotations Angle of Rotation Center of Rotation Rotations (Turns) A transformation in which a figure is

rotated about a point called the center of rotation. Angle of Rotation The number of degrees a figure rotates. 90 Degree Turn

Center of Rotation The point in which a figure is rotated. Click the triangle to Turning a figure around a point

or a vertex see rotation Rotation Clockwise Rotations 90 Degree Rotation:

180 Degree Rotation: Counter-Clockwise Rotations 90 Degree Rotation: 180 Degree

Rotation: Rotations of Lines A line that rotates remains the same length, but will not necessarily remain parallel. Same length; rotated 90 degrees clockwise Lines are not parallel

Rotations of Angles Angles that are rotated will remain the same degree measure. Same degree measure; rotated 90 degrees counterclockwise Rotation

180 Degree Clockwise Rotation