Hatton, Richard G · London, Chapman & Hall ld. · leaf 167
Tto. 100 —A cube with base in a vertical plane at 18° to the left. … FiQ. 101.—A cube with base lying in a directly ascending plane at 3J°to the horizontal. Perpendiculars to the Six Planes 133 dicular to the horizon as often as we like. Oould weset up similar lines of height perpendicular to the V.L.of our oblique plane? No, because the perpendicularsto any planes…
Perspective · Drawing
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