A treatise on surveying and navigation: uniting the theoretical, the practical, and the educational features of these subjects (1852)
Robinson, Horatio N[elson], 1806-1867. [from old catalog] · Cincinnati, J. Ernst · leaf 24
to the differenceof the two given squares. Proof, (th. 9, b. 3, and 36, b. 1.) PROBLEM 21. To construct a square, that shall be to a given square, as a line, M,to a line, N. Place M and N in a line, and on the sum describe a semicircleFrom the point where they join, draw a perpendicular to meet…
Surveying · Navigation
Internet Archive · Library of Congress · Public Domain Mark 1.0. Free to use for anything.