An elementary treatise on solid geometry, by Charles Smith
An 1886 Macmillan textbook by Cambridge mathematician Charles Smith, teaching analytic solid geometry to university students in London. The figures are line diagrams of three-axis coordinate frames, projected points, oblique planes and angles, lettered with serif capitals and printed in black on toned paper, offering ready-made perspective axes, dropped perpendiculars and skewed quadrilaterals for diagrammatic layouts.
