Digon

Two sided shape

Two sided shape

In geometry, a digon is a polygon with two sides (edges) and two vertices. ... A regular digon has both angles equal and both sides equal and is represented by Schläfli symbol 2. It may be constructed on a sphere as a pair of 180 degree arcs connecting antipodal points, when it forms a lune.

In the Lydian Chromatic Concept, how are the horizontal scales formed?
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Difference Between L'istesso Tempo and Tempo Precedente?
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Why am I unable to hear subtle differences in timbre?
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