Properties of a Triangle

TRIANGLE_PROPERTIES is a Python program which can compute properties, including angles, area, centroid, circumcircle, edge lengths, incircle, orientation, orthocenter, and quality, of a triangle in 2D.

These properties include:


The computer code and data files described and made available on this web page are distributed under the GNU LGPL license.


TRIANGLE_PROPERTIES is available in a C version and a C++ version and a FORTRAN90 version and a MATLAB version and a Python version.

Related Data and Programs:

POLYGON_PROPERTIES, a Python library which computes properties of an arbitrary polygon in the plane, defined by a sequence of vertices, including interior angles, area, centroid, containment of a point, convexity, diameter, distance to a point, inradius, lattice area, nearest point in set, outradius, uniform sampling.

TRIANGLE_INTERPOLATE, a Python library which shows how vertex data can be interpolated at any point in the interior of a triangle.

TRIANGLES, a dataset directory which contains examples of triangles;

Source Code:

Examples and Tests:

You can go up one level to the Python source codes.

Last revised on 09 November 2015.