Results 1 to 3 of 3

Math Help - Rotate a rectangle with respect to a point

  1. #1
    Newbie
    Joined
    Aug 2009
    Posts
    10

    Rotate a rectangle with respect to a point

    Hi,

    I have two rectangles in the attached bmp. A blue rectangle and a red rectangle. The diagonal of the red rectangle makes an angle theta with the diagonal of the blue rectangle.

    Will the diagonal of the red rectangle be parallel to the diagonal of the blue rectangle, if I rotate the diagonal of the red rectangle about the pivot point P(x1,y1) with the angle theta?

    If that is not possible what should i do to make the diagonal of the red rectangle parallel to that of the blue rectanle



    Manu
    Attached Thumbnails Attached Thumbnails Rotate a rectangle with respect to a point-alignement.gif  
    Last edited by ManuLi; August 20th 2009 at 12:13 AM. Reason: Change image
    Follow Math Help Forum on Facebook and Google+

  2. #2
    Super Member
    Joined
    Jan 2009
    Posts
    591
    Quote Originally Posted by ManuLi View Post
    Hi,

    I have two rectangles in the attached bmp. A blue rectangle and a red rectangle. The diagonal of the red rectangle makes an angle theta with the diagonal of the blue rectangle.

    Will the diagonal of the red rectangle be parallel to the diagonal of the blue rectangle, if I rotate the diagonal of the red rectangle about the pivot point P(x1,y1) with the angle theta?

    If that is not possible what should i do to make the diagonal of the red rectangle parallel to that of the blue rectanle



    Manu
    Translation.
    To keep the diagonals (or any lines) parallel with the original, you need to translate the image.
    Follow Math Help Forum on Facebook and Google+

  3. #3
    Newbie
    Joined
    Aug 2009
    Posts
    10
    Hi aidan,

    Thanks for the reply.

    How can I translate the red rectangle with respect to the point P(x1,y1), so the the diagonals are parallel?

    Is there any formula for that?

    Manu
    Follow Math Help Forum on Facebook and Google+

Similar Math Help Forum Discussions

  1. Move and Rotate a point around a new origin
    Posted in the Advanced Applied Math Forum
    Replies: 24
    Last Post: February 25th 2011, 02:33 AM
  2. Rotate a line about a point
    Posted in the Trigonometry Forum
    Replies: 1
    Last Post: August 18th 2009, 10:24 AM
  3. [SOLVED] Rotate about a pivot point
    Posted in the Trigonometry Forum
    Replies: 1
    Last Post: August 4th 2009, 06:48 AM
  4. Height of point P above a rectangle
    Posted in the Trigonometry Forum
    Replies: 0
    Last Post: March 21st 2008, 11:45 AM
  5. Using sin and cos to rotate a point
    Posted in the Trigonometry Forum
    Replies: 1
    Last Post: September 10th 2007, 09:07 AM

Search Tags


/mathhelpforum @mathhelpforum