 | Euclides - 1846 - 292 pagine
...at right angles to the plane CK. Let any plane DE pass through AB, and let CE be the common section of the planes DE, CK ; take any point F in CE, from...which draw FG, in the plane DE, at right angles to CE : Then, because AB is at right angles to the plane CK, therefore it makes right angles with every straight... | |
 | John Playfair - 1847 - 340 pagine
...right angles to the plane CK Let any plane DE pass-through AB, and let CE be the common section ot the planes DE, CK ; take any point F in CE, from which...draw FG in the plane DE at right angles to CE : And because AB is perpendicular to the plane CK, therefore it is also perpendicular to every straight line... | |
 | Samuel Hunter Christie - 1847 - 172 pagine
...plane MN. Let any plane DE pass through AB, and let CE be the common section of the planes DE, MN; take any point F in CE, from which draw FG in the plane DE at right angles to CE (I. 11). Because AB is perpendicular to the plane MN, therefore it is also perpendicular to every straight... | |
 | Euclides - 1855 - 230 pagine
...angles to that plane. DEMONSTRATION. Let any plane DE pass through AB, and let CE be the common section of the planes DE, CK ; take any point F in CE, from...which draw FG, in the plane DE, at right angles to CE (a): and because AB is perpendicular to the plane CK, therefore it is also perpendicular to every straight... | |
 | John Playfair - 1856 - 346 pagine
...right angles to the plane CK. Let any plane DE pass through AB, and let CE be the common section rf the planes DE, CK ; take any point F in CE, from which draw FG in ae plane DE at right angles to CE : And because AB is perpendicular to the plane CK, therefore it is... | |
 | Eucleides - 1860 - 396 pagine
...plane. DEMONSTRATION. Let 3> G- A. & any plane DE pass through AB, and let CE be the common section of the planes DE, CK ; take any point F in CE, from...which draw FG, in the plane DE, at right angles to CE (a) : and because AB is perpendicular to the plane CK, therefore it is also perpendicular to every... | |
 | Euclides - 1864 - 448 pagine
...right angles to the plane CK. DGAH Let any plane DE pass through AB, and let CE be the common section of the planes DE, CK; take any point F in CE, from...which draw FG in the plane DE at right angles to CE. (I. 11.) And because AB is perpendicular to the plane CK, therefore it is also perpendicular to every... | |
 | Euclides - 1865 - 402 pagine
...angles to tne plane CK. CONSTRUCTION Let any plane DE pass through AB, and let CE be the common section of the planes DE, CK ( take any point F in CE, from...which draw FG in the plane DE at right angles to CE. (i. 11.) DEMONSTRATION And because AB is perpendicular to the plane CK, therefore it is also perpendicular... | |
 | Robert Potts - 1865 - 528 pagine
...at right angles to the plane CK. Let /*ny plane DE pass through AB, and let CM be the common section of the planes DE, CK; take any point F in CE, from which draw FG in the plane DM at right angles to CE. (i. 11.) And because AB is perpendicular to the plano CK, therefore it is... | |
 | Euclid, Isaac Todhunter - 1867 - 426 pagine
...B Let any plane DE pass through AB, and let CE be the common section of the planes DE, CK; [XI. 3. ^take any point F in ' CE, from which draw FG, in the plane DE, at right angles to CE. [I. 11. Then, because AB is at right angles to the plane CK, [Hypothesis. therefore it makes right... | |
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AB shall be at right angles to the plane CK. Let any plane DE pass through AB, and let CE be the common section of the planes DE, CK ; take any point F in CE, from which draw FG in the plane DE at right D angles to CE ; and because AB is , perpendicular... 
