 | Robert Simson - 1806 - 546 pagina’s
...the plane draw any straight line BC, and from the point A a 12. 1. draw » AD perpendicular to BC. If then AD be also perpendicular to the plane BH, the thing required is already done ; but if b 11. 1. it be not, from the point D drawb, in the plane BH, the straight line DE at right angles to... | |
 | Euclides - 1814 - 560 pagina’s
...point A a straight line perpendicular to the plane BH. ' 12. i. point A draw a AD perpendicular to BC. If then AD be also perpendicular to the plane BH, the thing required is already done; but if it be pot, In the plane draw any straight line BC, and from the b li. i. from the point D draw b , in the... | |
 | Euclides - 1816 - 588 pagina’s
...the plane draw any straight line BC, and from the • IS. 1. point A draw* AD perpendicular to BC. If then AD be also perpendicular to the plane BH,...already done ; but if it be not, . from the point D drawb, in the plane BH, the straight line DE, at right angles to BC; and from the point A, draw AFper-G... | |
 | John Playfair - 1819 - 354 pagina’s
...In the plane draw any straight line BC, and from the point A draw (12.- I.) AD perpendicular to BC. If then AD be also perpendicular to the plane BH,...already done ; but if it be not, from the point D draw (11. I.), in the plane BH, the straight line DE at right angles to BC ; and from the point A draw \/... | |
 | John Playfair - 1819 - 350 pagina’s
...any straight line BC, and from the point A draw (12. 1.) AD perpendicular to BC. If then AD be alsg perpendicular to the plane BH, the thing required...already done ; but if it be not, from the point D draw (II. 1.), in the plane BH, the straight line DE at right angles to BC ; and from the point A draw AF... | |
 | Euclid, Robert Simson - 1821 - 514 pagina’s
...In the plane draw any straight line BC, and from the point A draw (12. 1.) AD perpendicular to BC. If then AD be also perpendicular to the plane BH,...already done; but if it be not, from the point D draw (11. 1.) in the plane BH, the straight line DE at right angles to BC: and from the point A draw AF... | |
 | Peter Nicholson - 1825 - 1046 pagina’s
...the point A draw AD perpendicular to BC. If then AD be also perpendicular to the plane BH, the uiing required is already done ; but if it be not, from the point D draw, (u. 1.) in the plane BH, the »traight fine DE, at right angles to К А. H BC; and from the point... | |
 | Euclid, John Playfair - 1826 - 326 pagina’s
...from the point A a straight line perpendieular to the plane BH* ?traitlinp BC, am< from AD (H. 1.), in the plane BH, the straight line DE at right angles to. BCj and trom the point A draw G AF perpendieular to DE ; and through Fdraw (11. l.) GH parallel to... | |
 | Robert Simson - 1827 - 546 pagina’s
...plane draw any straight line BC, and from the point A draw* AD perpend1cular to BC. If then * «. 1. AD be also perpendicular to the plane BH, the thing...plane BH, the straight line DE, at right angles to BC ; and from the point A draw * llf 1• AF perpendicular toDE: AF shall be perpendicular to the plane... | |
 | Euclides - 1834 - 518 pagina’s
...and from the point, A, draw * AD perpendicular to BC : if then AD be also per- • 12. 1. pendicular to the plane BH, the thing required is already done...be not, from the point D, draw *, in the plane BH, ^ ^J\ n •!1. I. the straight line DE at right angles to BC ; and from the point A, draw AF perpendicular... | |
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... plane, from a given point above it. Let A be the given point above the plane BH; it is required to draw from the point A a straight line perpendicular to the plane BH. 
