Elementary perspective arranged to meet the requirements of architects, draughtmen, and students (1913)
Crosskey, Lewes R · London, Backie and son ltd · leaf 121
n of a folding screen of three equal leaves. Thescreen stands upon the ground plane, and the corner A is to be 3 ft. on the left of thespectator and 5 ft. from the ground line, and the line A B is to recede towards theright at an angle of 45° with the ground line. Eepresent the screen in… … Elevation Plan Fig. 26. PEOBLEM LI. Fig. 26 gives the plan and elevation of a board with an irregular curve drawnupon it. The board stands upon the ground plane, and the plane of the board isa vertical plane which recedes towards the left at an angle of 40° with the pictureplane. The corner A is to…
Perspective
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![An illustration from Henry Cornelius Agrippa's Fourth book of occult philosophy, and geomancy. Magical elements of Peter de Abano. Astronomical geomancy [by Gerardus Cremonensis]. The nature of spirits [by Gorg Pictorius]. And arbatel of magic (1655)](https://img.insideoutlibrary.com/img/200/ia-cu31924006718757-218-30.webp)
