The American house carpenter: a treatise upon architecture, cornices and mouldings, framing, doors, windows and stairs. Together with the most important principles of practical geometry (1852)
Hatfield, R. G. (Robert Griffith), 1815-1879 · New York, J. Wiley · leaf 40
to a b ; join c and b ; bisect c 6 at a—which will be the centre of the circle. If a circle be not too large for the purpose, its centre may veryreadily be ascertained by the help of a carpenters-square, thus :app y the corner of the square to any point in the circumference,as at a ; by the edges… … 82.—At a given jjoiiil in a circle, to draw a tangent thereto.Let a, {Fig, 41,) be the given point, and b the centre of the cir-cle. Join a and b ; through the point, a, and at right angles toa bj draw c d ; c dis the tangent required.
Carpentry · Architecture
Internet Archive · Library of Congress · Public Domain Mark 1.0. Free to use for anything.
