Phillips, Andrew Wheeler, 1844- [from old catalog] · [New York, Press of J. J. Little & co.] · leaf 7
ig. 3 at an angle of 60° to the line O /, and on a scaleof one half. The extremities of these lines are joined to make thebase of the figure. At A the vertical line A B is drawn of the same height as the pyramid,and the vertex B is joined toeach one of the corners of thebase. The large… … GEOMETRY.—COURSE B. this 4 be the base of a figure, as it stands, with respect to a horizontal line of reference, as O g, parallel to the vertical plane of projection. Draw a horizontal diameter to the circle. Divide diameter into a equal parts, and throu< several points of division A X c ^ draw…
Geometry
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