1 / 11

Translations, Reflections, and Rotations

Translations, Reflections, and Rotations. 9/16/13. Warm-up 9/16/13. Write and answer the following questions: What do a translation, a rotation, and a reflection have in common? They are transformations.

otto
Download Presentation

Translations, Reflections, and 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. Translations, Reflections, and Rotations 9/16/13

  2. Warm-up 9/16/13 Write and answer the following questions: • What do a translation, a rotation, and a reflection have in common? They are transformations. • What is the difference between a translation, a rotation, and a reflection? Translations are slides, rotations are turns, and reflections are flips. Note: Warm-up Check today! – Be ready • 3 questions about rotation (9/11/13) • How many degrees was the rotation? (9/12/13) • Rotations (D) WS (9/13/13)

  3. Translations • What action is associated with translating? Slide • Is the image in the same direction as the preimage, opposite directions, or different directions? Same direction • What are the rules for translations? For example if I want to move 5 units horizontally and -6 units vertically how would I write the rule? (x + 5, y – 6)

  4. Example of Translation

  5. Reflections • What action is associated with reflecting? Flipping • Is the image in the same direction as the preimage, opposite directions, or different directions? Opposite directions • What are the rules for reflecting over the x-axis? y-axis? y=x? y=-x? x-axis: (x, -y), y-axis: (-x, y), y=x: (y, x), y=-x: (-y, x)

  6. Example of Reflection

  7. Rotations • What action is associated with rotating? Turning • Is the image in the same direction as the preimage, opposite directions, or different directions? Different directions • What are the rules for rotating 90 degrees clockwise? 90 degrees counterclockwise? 180 degrees? 90⁰ CW: (y, -x), 90⁰ CCW: (-y, x), 180 ⁰ rotation: (-x, -y)

  8. Example of rotation

  9. Work Session • Work on the Transformations WS • Put the worksheet in the your class’s box at the end of the period

  10. Closing 9/16/13 • You will receive a post-it note. On the post-it, write what confuses you about the three transformations we’ve talked about. • When instructed, post the note on the board for your class period. Note: Be specific! – For example, write I don’t understand how to reflect over diagonal lines instead of I don’t know how to reflect.

  11. Homework • Review Transformations notes and bring books to class tomorrow

More Related