90, 90 divisions—and on large scales the degreesare again subdivided. The radius of any circle is always equal to thechord of 60 deg. of that circle; and whenever wehave an angle to measure, or an angle to make,and to contain a certain proposed number of degrees, we must always take the chord of 60… … compasses so that one foot may fall on the begin-ning of the line of chords, and the other foot on60 deg.; then with this radius and centre o, des-cribe the arc hn: we then take the arc hn in the THE decorators ASSISTANT. compasses, and apply it from the beginning on theline of chords, and it…
Design · Decoration and ornament · Art
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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-117-316.webp)
