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 - Page 9by Samuel Hunter Christie - 1847Full view - About this book
| Robert Simson - Trigonometry - 1781 - 534 pages
...r.' i D*f ii, b. 4. n. A 15ook XI. ftraight • line; let this be BF. therefore the three ftraight **lines AB, BC, BF are all in one plane, viz. that which** paftes thro' AB, BC. and becaufe ABftands at right angles to each of the ftraight lmes BD, BE, it is... | |
| Euclid - 1781 - 552 pages
...are, 83.11. Book xL are, fhall be a ftraight » line ; let this be BF : Therefore the three ftraight **lines AB, BC, BF are all in one plane, viz. that which** paffes through AB, BC ; and becaufe AB (lands at right angles to each of the ftraight lines BD, BE,... | |
| Euclid, John Playfair - Euclid's Elements - 1795 - 462 pages
...in which BD and BE are, fliall be a ftraight » line ; let this be BF : therefore the three ftraight **lines AB, BC, BF are all in one plane, viz. that which** pafies through AB, BC ; and beeaufe AJB ftands at right angles to each of the ftraight lines BD, BE,... | |
| Robert Simson - Trigonometry - 1806 - 546 pages
...the common section of which with the plane, in which BD and BE are, Book XI. shall be a straight » **line ; let this be BF : therefore the three ' —...lines AB, BC, BF are all in one plane, viz. that which** a 3. 11. • passes through AB, BC ; and because AB stands at right angles to each of the straight... | |
| John Playfair - Mathematics - 1806 - 320 pages
...2. Sup. therefore the three straight lines AB, BC, BF are in one plane, which passes through AB, BC. **Because AB stands at right angles to each of the straight lines BD, BE, it is also at right** angles'1 b*. 2. Sup. to the plane passing through them, and therefore makes right angles with every... | |
| Euclid - Geometry - 1810 - 554 pages
...with the plane, in which BD and BE are a 3. 11. b. 4.11. c 3. df. II. Rook XI. sliall be a straight» **line; let this be BF: therefore the three straight...which passes through AB, BC; and because AB stands** gt right angles to each of the straight lines BD, BE, it is also at right angles b to the plane passing... | |
| Euclides - 1814 - 560 pages
...the plane in which BD O '8. i. Booi XI. and BE are, shall be a straight* ' line; let this be BF: *~v^ **Therefore the three straight lines AB, BC, BF, are...AB stands at right angles to each of the straight** '4 Def. 1i. ing through them ; and therefore makes right angles c with b 4.1i. lines BD, BE, it is... | |
| Euclides - 1816 - 588 pages
...BC, . tfec common section of which, with the plane in which BD O and BE are, shall be a straight a **line ; let this be BF : Therefore the three straight...AB stands at right angles to each of the straight** k 4. 11. lines BD, BE, it is also at right angles'* to the plane pas«: s Def. 11. ing through them... | |
| John Playfair - Circle-squaring - 1819 - 350 pages
...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...straight lines BD, BE, it is also at right angles** (4. 2. Sup.) to the plane passing through them ; and therefore makes right angles with every straight... | |
| Euclid, Robert Simson - Geometry - 1821 - 514 pages
...section of which with the plane, in which BD and BE are, •Be* Note. shall be a straight (3. 11.) **line; let this be BF: therefore the three straight lines AB, BC,** BFare all in one plane, viz. that which passes through AB, BC: and because AB stands at right angles... | |
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