1 / 13

Rotations

Rotations. 7.3. How do rotations work?. Every point rotates around the center in a circle. Since the radius of the circle will not change, the point is just as far from the center as it was, just in a new direction. Vocabulary. Rotation:

azura
Télécharger la présentation

Rotations

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Rotations 7.3

  2. How do rotations work? • Every point rotates around the center in a circle. • Since the radius of the circle will not change, the point is just as far from the center as it was, just in a new direction.

  3. Vocabulary • Rotation: • A type of transformation in which a figure is turned about a fixed point. • Center of Rotation: • The fixed point of a rotation is called the center of rotation. • Angle of Rotation: • The angle formed when rays are drawn from the center of rotation to a point and its image.

  4. When Rotating around the origin… • Every 90˚ rotation will exchange the x and y coordinates. • Every 90˚ rotation will change the quadrant the figure is in.

  5. Types of Rotations • Rotation about vertex of figure • Rotation about a point not on figure • Rotation about a point inside the figure.

  6. Double Reflections… Activity Time! • Write your name in one of the triangles, filling the triangle as much as possible! Bubble letters, etc… be creative! “Name Art Rotation”

  7. Double Reflections • A double reflection is the same as a rotation! • The angle of rotation is twice the measure of the angle between the lines of reflection

  8. What you will be asked to do • 5. CD • 6. FG • 7. EF • 8. AB . • 9. HPA • 10. GPH

  9. What you will be asked to do • 14.) A’ (1,3) B’(3,3) C’(3,-1) D’(1,-1) • 15.) A’ (0,2) B’(2,3) C’(4,2) D’(2,1)

  10. What you will be asked to do • 11.) 64 • 12.) 64

  11. Homework: Finish your “Name Art Rotation” It must be FULLY colored… no white space! 7.3 Pg. 416 13-19, 25-27, 30-35

More Related