 Note. (3. 11.) line; let this be BF: therefore the three straight lines AB, BC, BF are all in one plane, viz. that which passes through AB, BC : and because AB stands at right angles to each of the straight lines BD, BE, it is also at right angles (4....  An elementary course of mathematics - Página 9por Samuel Hunter Christie - 1847Vista completa - Acerca de este libro
 | Euclides, James Thomson - 1845 - 382 páginas
...which BD and BE are, is (XI. 3) a straight line; let this be BF. Therefore the three straight lines BA, BC, BF are all in one plane, viz. that which passes through AB, BC; and (XI. 4) because AB is at right angles to each of the straight lines BD, BE, it is also at right angles... | |
 | Euclid, John Playfair - 1846 - 334 páginas
...the common section of which with the plane, in which BD and BE are, shall be a straight (3. 2. Sup.) line ; let this be BF : therefore the three straight...are all in one plane, viz. that which passes through jiD, BC ; and because AB stands at right angles to each of the straight lines BD, BE, it is also at... | |
 | Euclides - 1846 - 292 páginas
...section of which, with the plane in which are BD and BE, will be a straight line — BF suppose : Then the three straight lines AB, BC, BF are all in one plane, viz. that which passes through AB and BC : And because AB stands at right angles to each of the straight lines BD, BE, it is also at... | |
 | Euclides - 1855 - 230 páginas
...AB, BC, the common Bection of which, with the plane in which BD and BE are, is a straight line (a); let this be BF: therefore the three straight lines...straight lines BD, BE, it is also at right angles to the plane passing through them (4) ; and therefore makes right angles with every straight line in... | |
 | Euclides - 1855 - 270 páginas
...lines AB, B С, and BF are all in one plane (Hyp.), viz., that which passes through AB and B С : and AB stands at right angles to each of the straight lines BD and B E. Therefore AB is at right angles (XI. 4) to the plane in which they are. Wherefore AB makes... | |
 | Eucleides - 1860 - 396 páginas
...AB, BC, the common section of which, with the plane in which BD and BE are, is a straight line (a); let this be BF: therefore the three straight lines...straight lines BD, BE, it is also at right angles to the plane passing through them (4) ; aud therefore makes right angles with every straight line in... | |
 | Euclides - 1864 - 448 páginas
...the common section of which, with the plane in which Bl) and BE are, is a straight line ; (XI. 3.) let this be BF: therefore the three straight lines AB, BC, BF axe all in one plane. viz. that which passes through AB, BC. And because AB stands at right angles... | |
 | Euclides - 1865 - 402 páginas
...straight lines AB, BC, BF most be all in one plane, viz. that which passes through AB, BC. DEMONSTRATION Because AB stands at right angles to each of the straight lines BD, BE, therefore it is also at right angles to the plane passing through them; (xi. 4.) wherefore it makes... | |
 | Robert Potts - 1865 - 528 páginas
...BC, the common section of which, with the plane in which BD and BE are, is a straight line ; (xi. 3.) let this be BF: therefore the three straight lines AB, BC, BF axe all in one plane, viz. that which passes through AB, BC. And because AB stands at right angles... | |
 | John Playfair - 1855 - 350 páginas
...the common section of which with '.he plane, in which BD and BE are, shall be a straight (3. 2. Sup.) line ; let this be BF : therefore the three straight lines AB, BC, BF are all in one plane,-viz. that which passes through AB, BC ; and because AB stands at right angles to each of the... | |
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