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 138
134 SURVEYING. and through c, draw cd parallel to CB. Where these two lines in-tersect is P, and the triangle ABC is divided into three triangles,APB, CPB,an&APC. Demonstration.— Any triangle having AB for its base, and itsvertex in the line, ab will have the same ratio to the triangle ABC,as…
Surveying · Navigation
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