perspective descriptive geometry 44 geometry 27 drawings (art) 24 architecture 21 geometric projection 21 engineering drawing 18 more ... architectonic drawing 14 optics 10 fine arts 7 mathematics 6 civil engineering 6 projective geometry 5 promítání (geometrie) 4 stereometry 4 trigonometrie 4 typography 4 vržený stín 4 subjects 4 arithmetic 3 axonometrie 3 geometrické proporce 3 optic instruments 3 building constructions 3 světlo a stín 3 architectural elements 2 astronomy 2 buildings (architecture) 2 Euclidean geometry 2 geometrical optics 2 less ...