List of triangle topics

This list of triangle topics includes things related to the geometric shape, either abstractly, as in idealizations studied by geometers, or in triangular arrays such as Pascal's triangle or triangular matrices, or concretely in physical space. It does not include metaphors like "love triangle" in which the word has no reference to the geometric shape.

Geometry

Trigonometry

Applied mathematics

Resources

Algebra

Number theory

Triangular arrays of numbers

The (incomplete) Bell polynomials from a triangular array of polynomials (see also Polynomial sequence).

Integers in triangle geometry

Geography

Anatomy

Artifacts

Symbols

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