Spanton, J. Humphrey (John Humphrey) · London, Macmillan and Co., Limited; New York, The Macmillan Company · leaf 21
GEOMETRICAL DEFINITIONS. An arc is any portion of ihe circumference of a circle, as abc(Fig. 6). A chord is a straight line join-ing the extremities of an arc, as ac. Asegment is the space enclosed by thearc and its chord, as f. A sector is thespace enclosed by two radii and thearc between them, as…
Geometrical drawing · Design · Drawing
Internet Archive · Wellesley College Library · Public Domain Mark 1.0. Free to use for anything.
![An illustration from Divina proportione : opera a tutti glingegni perspicaci e curiosi necessaria oue ciascun studioso di philosophia: prospettiua pictura sculptura: architectura: musica: e altre mathematice: suavissima: sotile: e admirabile doctrina consequira: e delecterassi: co[n] varie questione de secretissima scientia (1509)](https://img.insideoutlibrary.com/img/200/ia-divinaproportion00paci-48-66.webp)
