A treatise on special or elementary geometry (1877)
Olney, Edward, 1827-1887, Olney, Edward, 1827-1887. Elements of trigonometry, plane and spherical · New York : Sheldon · leaf 124
te angle with AB. Let CBbe such a line. At any point in CB, asC, draw a line CE, making angle ECB =the given angle 0, Fig. 166. Through Apass a parallel to CE (see Ex. 1), as AD.Pass a circumference through A, D, andB. Any angle inscribed in segment AtwBis equal to O. [Let the student give allthe… … SYNOPSIS. CO o<o H1^ How angles are measured. r Prop. L Equal arcs subtend equal ( g^^ \ S[°Iureof 1, 2, andangles at the centre. ] 4 right angles. O Prop. II. Commensurable arcs in the same ratioas their subtended angles. Cor. Converse. Prop. III. Incommensurable arcs. Cor. Converse.iSch.…
Geometry · Trigonometry
Internet Archive · California Digital Library · Public Domain Mark 1.0. Free to use for anything.
