The elements of Euclid explain'd. In a new, but most easie method, together with the use of every proposition through all parts of the mathematicks
A 1685 Oxford edition of Euclid's Elements, printed for the University by L. Lichfield and A. Stephens, a geometry textbook meant for students learning proofs in a simplified method. Its two pictures are plain lettered diagrams of cylinders, with labelled points and dotted or ruled construction lines, showing how solids are marked for reasoning rather than shown as finished objects. A designer might take from them the clean, schematic look of early printed technical diagrams, with thin uniform outlines and capital letters placed at corners and edges.
