American text books of art education : Geometrical drawing (1873)
Smith, Walter, 1836-1886 · Boston : James R. Osgood & Co. · leaf 37
Prob. 21. — To find the centre of a given circle, A B C. Draw two chords, A B, B C ; bisect them by Prob. 1. Draw thebisecting lines until they cut each other in point D, which is thecentre of the circle. Prob. 22. — To draw a tangent to a given circle at a given point ofcontact, A. Find the centre…
Geometrical drawing
Internet Archive · Boston Public 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-87-132.webp)