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Further subjects are under miscellaneous mathematics and Geometric algebra.

The purpose is to introduce spherical triangles with one ore more angles or sides greater than pi. A signed area theory extends with a little modification the connection between area and spherical excess , and facilitates a classification of the triangles.

The triangle cases are investigated. Formulae for the radii of circumcircles , in- and excircles are found.

Also the assignment problem for incircles is solved. A duality theorem is proved.

**The content of the work starts with some basic theory regarding the subject. To get an overview of the contents of the work it is listed in a bulleted list below:**

- The basic theory.
- GST problems and solutions.
- Examples.
- Theory for the GST cases.
- The Circumcircle.
- Area.
- In- and Excircles.
- Duality.
- Miscellaneous.
- References.

## Generalized Spherical Triangles – Download

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## Other projects within miscellaneous mathematics

There are many relevant topics to immerse oneself in within miscellaneous mathematics. An example of a topic could perhaps be the following topic: Continued Fractions.