Sunday, February 19, 2012

How do we graph rotation

Aim: How do we graph rotation?

Rotation
  1. An angle of a rotation
  2. Direction is counterclock wise or clockwise
  3. center of rotation
90 degrees
(A,B) ---> (-B,A)

180 degrees
(A,B)---->(-A,-B)

270 degrees
(A,B)------>(B,-A)

Rotated 180 degrees
Rotated 270 degrees


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4 comments:

  1. SchnatterlyFebruary 26, 2012 at 5:05 PM

    nice diagrams. is counterclockwise standard? the last one looks like it's 180 though.

    don't forget to quiz us too...

    ReplyDelete
    Replies
    1. UnknownOctober 23, 2012 at 8:04 AM

      A positive rotation is always in the counterclockwise direction. A negative rotation would be in the clockwise direction. This comes from the unit circle.

      Delete
  2. Mariah DwyerMarch 15, 2012 at 10:25 AM

    This is nice.
    How could it be used in real life? How do you think?

    ReplyDelete
  3. UnknownOctober 23, 2012 at 8:03 AM

    Your rotation of 270 degrees is incorrect. You have a diagram of a translation not a rotation.

    ReplyDelete

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