gnomonbased
Gnomonbased is an adjective used in technical literature to describe methods, constructions, or analyses that employ the concept or tool of the gnomon. The gnomon originally referred to the part of a sundial that casts a shadow, used to tell time by the sun’s position. In geometry, a gnomon is the figure formed when a smaller similar shape is removed from a larger one, leaving a remaining piece that can be used in dissection and reconstruction tasks. Accordingly, gnomonbased approaches either rely on the projection of a gnomon’s shadow to determine other quantities or use gnomon‑shaped dissection pieces to build or decompose figures.
In practice, the term appears in discussions of classical geometry, sundial design, and educational demonstrations of
Examples include using a gnomon‑based dissection to derive the area of a polygon by expressing it as
In general, gnomonbased denotes a reliance on gnomon‑inspired projection or dissection as the core mechanism of