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Warm Up

Week 1. Warm Up. 01.05.12. Rotation. A transformation in which a figure is turned about a fixed point. Ex 1. 60º. •. P. Rotation. A transformation in which a figure is turned about a fixed point. Ex 1. 60º. •. P. Rotation.

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Warm Up

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  1. Week 1 Warm Up 01.05.12

  2. Rotation A transformation in which a figure is turned about a fixed point. Ex 1 60º • P

  3. Rotation A transformation in which a figure is turned about a fixed point. Ex 1 60º • P

  4. Rotation A transformation in which a figure is turned about a fixed point. Ex 1 • P m ∠ PQR ≅ m ∠ PQ’R’

  5. Theorem 7.2 QR ≅ Q’R’

  6. Theorem 7.3 B’ k B C’ C A’ m A A’’ • xº C’’ B’’

  7. Theorem 7.3 B’ k B C’ C A’ m A A’’ • 2xº C’’ B’’

  8. Ex 2 k m B’ • B C’ C A’ A A’’ What is the rotation from ∆ABC to ∆A’’B’’C’’? 60º C’’ 120º B’’

  9. Rotational Symmetry A figure that can be mapped onto itself by a rotation of 180º or less. Ex 3 180º

  10. Textbook page 407, 15 - 20 All. Assignment: Textbook page 407, 15 - 20 All.

  11. Assignment: Textbook page 407, 15 - 20 All.

  12. Line of Reflection The mirror in the transformation. Ex 1

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