Warm Up Tell whether the shaded figure is a reflection of the non-shaded figure. 1. 2. 3. 4.

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Presentation transcript:

Warm Up Tell whether the shaded figure is a reflection of the non-shaded figure. 1. 2. 3. 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. Vocabulary: 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.

Rotation Click the triangle to see rotation Turning a figure around a point or a vertex Rotation

Clockwise Rotations 90 Degree Rotation: 180 Degree Rotation:

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

Same length; rotated 90 degrees clockwise Lines are not parallel 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

Same degree measure; rotated 90 degrees counter-clockwise Rotations of Angles Angles that are rotated will remain the same degree measure. Same degree measure; rotated 90 degrees counter-clockwise

180 Degree Clockwise Rotation