ThreePointCircumcircle /

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Properties of a triangle's circumcircle

This IJ1 script calculates the properties of a triangle's circumcircle which is the circle whose circumference passes through the three points of the triangle.

Calculated are:

  • Area of circle
  • Coordinates of circumcentre
  • Circumradius
  • Menger Curvature (inverse of radius)

Written and Tested in Fiji 64bit.


  • Download and update Fiji
  • Open the script in the Fiji Script Editor and hit run. A blank demo image will be opened and you will be asked to mark three points.
  • Hit OK and the script will run, paramters will be written out to the log and an overlay will mark the circumcentre, original triangle and the circumcircle.

Example Output

Acknowledgements and Licence