Matematika Ria
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Hak cipta © 2009


When you resize a shape it gets bigger or smaller.



... but it still looks similar:

  • all angles stay the same
  • relative sizes are the same (for example
    the face and body are still in proportion)
Note: here we call it resizing, but other people call it dilation, contraction, compression, enlargement or even expansion! Same idea, just different names.)


To resize, just do this for every corner:

  • draw a line from the central point to the corner
  • increase (or decrease) the length of that line
  • put a dot at the new point
Then just connect the dots for the resized shape!

Choose some values, then press "Resize"

If you want the shape to double in size use 2, if you want to halve its size use 0.5.

Try placing the central point in different locations, too.

Note: If you cannot see the animation at all, you will need to install "Flash Player".