 | Euclid, Isaac Todhunter - 1867 - 424 páginas
...to which AB is at right angles. Wherefore, if two straight lines &c. QED PROPOSITION 9. THEOREM. Two straight lines which are each of them parallel to...plane with it, are parallel to one another. Let AB and CD be each of them parallel to EF, and not in the same plane with it : AB shall be parallel to... | |
 | Robert Potts - 1868 - 434 páginas
...parallel to BE. Therefore AD and CF are each of them equal and parallel to BE. But straight lines that are parallel to the same straight line, and not in the same plane with it, are parallel to one another: (XI. 9.) therefore AD is parallel to CF; and it is equal to it; (I. ax. 1.) and AC, DFjoin them towards... | |
 | Woolwich roy. military acad - 1868 - 426 páginas
...rectilineal figure and equal to another given rectilineal figure. 12. Define parallel straight lines. Two straight lines which are each of them parallel to the same straight line, and uot in the same plane with it, are parallel to one another. PUEE MATHEMATICS. Section I. REV. WN GKIFFIN,... | |
 | Euclides, James Hamblin Smith - 1872 - 372 páginas
...through DE,DB. XI.4. .'. CD is a. to the plane to which AB is x . Q. K D. PROPOSITION IX. THEOREM. Two straight lines, which are each of them parallel to the same straight line, and not in the same plane urith it, are parallel to one another. Let AB, CD be each of them II to EF, and not in the same plane... | |
 | Euclides - 1874 - 342 páginas
...at right angles (XI. 4). Therefore, if two straight lines, &c. QED PROPOSITION 9. — Theorem. Two straight lines which are each of them parallel to the same straight line, but not in the same plane with it, are parallel to one another. K Let AB and CD be each of them parallel... | |
 | Francis Cuthbertson - 1874 - 396 páginas
...another; which is impossible. PARALLEL LINES (not all situated in the same plane). PROPOSITION XII. Two straight lines which are each of them parallel to the same straight line, which is not in the same plane with them, are parallel to one another. . C ft Let AB, CFbe each of... | |
 | Euclides, James Hamblin Smith - 1876 - 376 páginas
...through DE, DB. XL 4 .'. CD is J. to the plane to which AB is j_ . QED PROPOSITION IX. THEOREM. Two straight lines, which are each of them parallel to...plane with it, are parallel to one another. Let AB, CD be each of them || to EF, and not in the same plane with it Then must AB be \\ to CD. In EF take... | |
 | Euclides, James Hamblin Smith - 1876 - 378 páginas
...is -L to the plane to which AB is J. . QED PROPOSITION IX. THEOREM. Two straight lines, which cure each of them parallel to the same straight line, and...plane with it, are parallel to one another. Let AB, CD be each of them || to EF, and not in the same plane with it. Then must AB be \\ to CD. In EF take... | |
 | Robert Potts - 1876 - 446 páginas
...lines, &c. QED PROPOSITION IX. THEOREM. Two stra.iy1d Una which are each of them parallel to the tame straight line, and not in the same plane with it, are parallel to one another. Let ATI, CD be each of them parallel to EF, and not in the same plane with it. Then AB shall be parallel... | |
 | Euclides, James Hamblin Smith - 1878 - 394 páginas
...through DE,DB. XI. 4. .'. CD is x to the plane to which AB is J. . QED PROPOSITION IX. THEOREM. Two straight lines, which are each of them parallel to...straight line, and not in the same plane with it, are paralld to one another. Let AB, CD be each of them I( to EF, and not in the same pkne with it. Then... | |
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Two straight lines which are each of them parallel to the same straight line, and not in the same plane with it, are parallel to one another. Let AB... 
