Reckoning / Shape / Circular segment
Plane figure · Circles
Circular segment
The part of a disc cut off by a chord.
Dimensions
Results
area A
chord c
height h
Formulas
Sector minus the triangle formed by the two radii and the chord.
Checked: the A formula agrees with a Monte Carlo measurement of the shape itself, made from its geometric definition, every time the site is built.
Topology lens
Topologically a disc, like every figure here without a hole: Euler characteristic 1. Stretching turns it into a circle, a square or a star. More on the lens.