| Robert Simson - Trigonometry - 1762 - 466 pages
...PROP. XIV. THE OR. IF at a point in a ftraight iine, two other ftraight lines, Qpon the oppofite fides **of it, make the adjacent angles together equal to two right angles,** thefe two ftraight lines fhall be in one and the fame ftraight line, At the point B in the ftraight... | |
| Robert Simson - Trigonometry - 1775 - 520 pages
..."XIV. THEO R. IF, at a point in a ftraight line, two other ftraight lines, upon the oppofite fides **of it, make the adjacent angles together equal to two right angles,** thefe two ftraight lines fhall be in one and the fame ftraight line. ' ' At the point B in the ftraight... | |
| Euclid - 1781 - 550 pages
...XIV. T II EO R. IF, at a point in.a ftraight line, two other ftraight lines, upon the oppofite fides **of it, make the adjacent angles together equal to two right angles,** thefe two ftraight lines mall be in one and the fame ftraight line. At the point B in the ftraight... | |
| John Playfair - Trigonometry - 1795 - 444 pages
...P. XIV. THEO R. IF, at a point in a ftraight line, two other ftraight lines, upon the oppofite fides **of it, make the adjacent angles together equal to two right angles,** thefe two ftraight lines fhall be in one and the fame ftraight line. At the point B in the ftraight... | |
| Alexander Ingram - Trigonometry - 1799 - 351 pages
...FROP. XIV. THEOR. at a point in a ftraight line, two other ftraight lines, upon the oppoiite fides **of it, make the adjacent angles together equal to two right angles,** thefe two ftraight lines fliall be in one and the fame ftraight line. At the point B in the ftraight... | |
| Robert Simson - Trigonometry - 1804
...PROP. XIV. THEO R. IF at a point in a ftraight line, two other ftraight lines, upon the oppofite fides **of it, make the adjacent angles together equal to two right angles,** thefe two ftraight lines fhall be in one and the fame ftraight line. At the point B in the ftraight... | |
| John Playfair - Euclid's Elements - 1806 - 320 pages
...together equal to two right angles. Wherefore, when a straight line, &c. C£. ED PROP. XIV. THEOR. **IF, at a point in a straight line, two other straight...lines shall be in one and the same straight line.** At the point B, in the straight line AB, let the two straight lines BC, BD, upon the opposite sides... | |
| Robert Simson - Trigonometry - 1806 - 518 pages
...are together equal to two right angles. Wherefore, when a straight line, fcc. QED PROP. XIV. THEOR. **IF, at a point in a straight line, two other straight...lines shall be in one and the same straight line.** At the point B, in the straight line AB, let the two straight lines BC, BD, upon the opposite sides... | |
| John Mason Good - 1813 - 722 pages
...siile of it, are either two right angles, or are together rqual to two right angles. Prop. XIV. Tlieor. **If, at a point in a straight line, two other straight lines, upon the opposite** iidrs of it, make the adjacent angles together equal to t«-o right angles, these two straight lines... | |
| Euclides - 1814 - 558 pages
...ABC are together equal to two right angles. Wherefore when a straight line, &c. QED PROP. XIV. THEOR. **IF, at a point in a straight line, two other straight...angles, these two straight lines shall be in one and the** samestraight line. At the point B in the straight line AB, let the two straight lines BC, BD upon the... | |
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