 | Robert Simson - Trigonometry - 1762 - 488 pages
...plane BC with the third plane, and becaufe the plane AB is perpendicular to the third plane, and DE is drawn in the plane AB at right angles to AD their common fection, DE is perpendicular to the third «.4.Def.ii . plane ". in the fame manner, it may be proved... | |
 | Robert Simson - Trigonometry - 1775 - 534 pages
...plane BC with the third plane. And becaufe the plane AB is perpendicular to the third plane, and DE is drawn in the plane AB at right angles to AD their common fection, DE is perpendicular to a4.def. ii. the third plane*. In the fame manner, it may be proved... | |
 | Euclid - 1781 - 552 pages
...plane BC with the third plane. And becaufe the plane AB is perpendicular to the third plane, and Di is drawn in the plane AB at right angles to AD their common fection, DE is perpendicular to the third • 4-def. xt. plane a. In the fame manner, it may be proved... | |
 | Alexander Ingram - Trigonometry - 1799 - 374 pages
...plane BC, with the third plane. And becaufe the plane AB is perpendicular to the third plane, and DE is drawn in the plane AB at right angles to AD their common feftion, DE is perpendicular to the third plane *. In the fame manner, it may be proved, that DF is... | |
 | Robert Simson - Trigonometry - 1804 - 530 pages
...plane BC with the third plane. and becaufe the plane AB is perpendicular to the third plane, and DE is drawn in the plane AB at right angles to AD their common feftion, DE is perpendicular to the third a.4.Def.n. plane ». in the fame manner, it may be proved... | |
 | Robert Simson - Trigonometry - 1806 - 546 pages
...plane BC with the third plane. And because the plane AB is perpendicular to the third plane, and DE is drawn in the plane AB at right angles to AD their common section, DE is perpendicular to the third a 4 def. plane a. In the same manner it may be 11. proved that Dt'... | |
 | Euclides - 1816 - 588 pages
...plane BC with the third plane. And because the plane AB is perpendicular to the third plane, and DE is drawn in the plane AB at right angles to AD their common section, DE is perpen'4Def. 11. dicular to the third plane*. In the same manner, it may be proved, that DF is... | |
 | Peter Nicholson - Mathematics - 1825 - 1046 pages
...plane BC with the third plane. Anil because the plane AB is perpendicular to the third plane, and DE is drawn in the plane AB at right angles to AD their common section, BE is perpemi ¡ciliar to the third plane. (4. det 11.) In the same manner, it may be proved that DF... | |
 | Euclid - 1835 - 540 pages
...with the third plane. And, be- , cause the plane AB is perpendicular to the third plane, and 1)1, is drawn in the plane AB at right angles to AD their common section, DE is perpendicular to the a 4. def. 11. third plane*. In the same manner, it may be proved, that DF... | |
 | Robert Simson - Geometry - 1838 - 434 pages
...plane BC with the third plane. And because the plane AB is perpendicular to the third plane, and DE is drawn in the plane AB at right angles to AD their common section, DE is perpendicular to the third plane (4. def. 11.). In the same manner, it may be proved that DF... | |
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And because the plane AB is perpendicular to the third plane, and DE is drawn in the plane AB at right angles to AD their common section... 
