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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