A treatise on surveying and navigation: uniting the theoretical, practical, and educational features of these subjects (1857)
Robinson, Horatio N[elson], 1806-1867. [from old catalog] · Cincinnati, J. Ernst; Toledo, Anderson, Burr, & co. · leaf 19
16 SURVEY 1 MG, PROBLEM 11. To find the center of a given circle. Draw any two chords in the given circle,as AB and CD; and from the middle point,n, of AB, draw a perpendicular to AB;and from the middle point, m, draw a per-pendicular to CD; and where these twoperpendiculars intersect will be the… … PROBLEM 12. To draw a tangent to a given circle, from a given point, either in or without the circumference of the circle. When the given point is in the circum-ference, as A, draw AC the radius, andfrom the point A, draw AB perpendicularto A C; AB is the tangent required. Proof, (th. 4, b. 3).…
Surveying · Navigation
Internet Archive · Library of Congress · 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-124-341.webp)
