Results 1 to 4 of 4

Math Help - diagonal center points

  1. #1
    Junior Member
    Joined
    May 2007
    Posts
    42

    diagonal center points

    how to calculate diagonally center points of rectangle, triangle, circle and polygons. anyone help me.

    In the attachment image I need x1,y1 and x2,y2 points like this for some other shapes.
    Attached Thumbnails Attached Thumbnails diagonal center points-rectangle.gif  
    Last edited by kumar; February 1st 2008 at 03:32 AM.
    Follow Math Help Forum on Facebook and Google+

  2. #2
    Super Member
    earboth's Avatar
    Joined
    Jan 2006
    From
    Germany
    Posts
    5,830
    Thanks
    123
    Quote Originally Posted by kumar View Post
    how to calculate diagonally center points of rectangle, triangle, circle and polygons. anyone help me.

    In the attachment image I need x1,y1 and x2,y2 points like this for some other shapes.
    Hi,

    I'm not quite sure that I understand your question properly because triangles and circles don't have any diagonals ...

    If you have a rectangle and the center C of this rectangle is C\left(x_C, y_C\right) then

    x_C = \frac{x_1+x_2}{2}~\text{and}~y_C = \frac{y_1+y_2}{2}
    Attached Thumbnails Attached Thumbnails diagonal center points-center_rectangle.gif  
    Follow Math Help Forum on Facebook and Google+

  3. #3
    Junior Member
    Joined
    May 2007
    Posts
    42
    Hi

    I need that x1, y1 and x2, y2 points.
    Follow Math Help Forum on Facebook and Google+

  4. #4
    Super Member
    earboth's Avatar
    Joined
    Jan 2006
    From
    Germany
    Posts
    5,830
    Thanks
    123
    Quote Originally Posted by kumar View Post
    Hi

    I need that x1, y1 and x2, y2 points.
    Your question can't be answered in general.

    But if the following conditions are satisfied you can find some relations between the variables in question.

    1. Conditions:
    a) The sides of the rectangle are parallel to the coordinate axes.
    b) The measures of the rectangle are (known) constant values: w, l.

    2. Relations:
    a) x_2 - x_1 = w

    If you want to get more relations then you must know the coordinates of the vertices of the rectangle.
    Follow Math Help Forum on Facebook and Google+

Similar Math Help Forum Discussions

  1. Replies: 6
    Last Post: September 15th 2011, 11:21 AM
  2. [SOLVED] Finding a center point, focus points, and vertices
    Posted in the Pre-Calculus Forum
    Replies: 0
    Last Post: July 18th 2010, 10:26 PM
  3. Find center of sphere from 3 points
    Posted in the Advanced Applied Math Forum
    Replies: 3
    Last Post: March 10th 2010, 01:20 PM
  4. Replies: 0
    Last Post: October 15th 2008, 04:05 AM
  5. Rotating points around a known center
    Posted in the Pre-Calculus Forum
    Replies: 4
    Last Post: March 7th 2007, 03:23 PM

Search Tags


/mathhelpforum @mathhelpforum