 | Euclid, Isaac Todhunter - 1867 - 424 σελίδες
...CK. H Let any pkne DE pa*= 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... | |
 | Robert Potts - 1868 - 434 σελίδες
...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... | |
 | Robert Potts - 1876 - 446 σελίδες
...DE pass through AB, and let CE be the common section of the planes DE, CA ; take any point F in CK from which draw FG in the plane DE at right angles to CE. (i. 11.) And because AB is perpendicular to the plane LJi, therefore it is also perpendicular to every... | |
 | Isaac Todhunter - 1880 - 426 σελίδες
...CK. 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 [Hypothesis. therefore it makes right angles... | |
 | Euclid, Isaac Todhunter - 1883 - 428 σελίδες
...Let any plane DE pass through AB, and let CE be the common section of the planes DE, CK; [XI. 3. Y take any point F in > CE, from which draw FG, in the plane DE, at right angles to CE. [1. 11. JThen, because AB is at night angles to the plane [Hypothesis. therefore it makes right angles... | |
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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... 
