lled itsdiameter; from the centre of which toeither end is called the radius: and theboundary line is termed the circum-ference from the Latin words circum,around, and fero to cany. That is :a line carried around. Thus we see anarea or space is enclosed by one line.An area may be enclosed by two… … Take the radius of the circle, and withit mark off six points on the circum-ference. Take two of these lengths ofthe radius and join their extreme pointsA and B, which will be the base. Nowtake this base as a radius and de-scribe alternately two arcs cutting eachother at C. Join A, C, and B, C,…
Architecture
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![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-100-222.webp)
