TRIANGLE_PROPERTIES
Compute Properties of a Triangle

TRIANGLE_PROPERTIES is a MATLAB program which computes properties of a triangle.

These properties include:

• Angles;
• Area;
• Centroid;
• Circumcircle (center and radius);
• Edge lengths;
• Incircle (center and radius);
• Orientation;
• Orthocenter;
• Quality: ratio of incircle radius / circumcircle radius;

Usage:

triangle_properties ( 'filename' )

• 'filename' is a file which contains the vertex coordinates.

Licensing:

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

Languages:

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

Related Data and Programs:

GEOMETRY, a MATLAB library which performs geometric calculations in 2, 3 and N dimensional space.

TETRAHEDRON_PROPERTIES, a MATLAB program which computes properties of a given tetrahedron.

TRIANGLES, a dataset directory which contains examples of triangles;

Source Code:

• triangle_properties.m, the source code.

Examples and Tests:

• tex1.txt, example 1.
• tex1_properties.txt, the output file.
• tex2.txt, example 2.
• tex2_properties.txt, the output file.
• tex3.txt, example 3.
• tex3_properties.txt, the output file.
• tex4.txt, example 4.
• tex4_properties.txt, the output file.
• tex5.txt, example 5.
• tex5_properties.txt, the output file.
• tex6.txt, example 6.
• tex6_properties.txt, the output file.
• tex7.txt, example 7.
• tex7_properties.txt, the output file.
• tex8.txt, example 8.
• tex8_properties.txt, the output file.
• triangle_cap.txt, example of a "cap" triangle.
• triangle_cap_properties.txt, the output file.
• triangle_equilateral.txt, example of an equilateral triangle.
• triangle_equilateral_properties.txt, the output file.
• triangle_needle.txt, example of a "needle" triangle.
• triangle_needle_properties.txt, the output file.
• triangle_ref.txt, example of a reference triangle.
• triangle_ref_properties.txt, the output file.
• triangle_right.txt, example of a right triangle.
• triangle_right_properties.txt, the output file.

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