If, at a point in a straight line, two other straight lines, upon the opposite sides of it, make the adjacent angles together equal to two right angles, these two straight lines shall be in one and the same straight line. Euclid - Page 31by Euclid, Rupert Deakin - 1903 - 164 pagesFull view - About this book
| Robert Simson - Trigonometry - 1762 - 488 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 - 534 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... | |
| Euclid, John Playfair - Euclid's Elements - 1795 - 462 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 - 374 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 - 530 pages
...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... | |
| Robert Simson - Trigonometry - 1806 - 546 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,** upon the opposite sides of it, make the adjacent angles together equal to two right angles, these two... | |
| 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,** upon the opposite sides of it, make the adjacent angles together equal to two right angles, these two... | |
| 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... | |
| Euclides - 1814 - 560 pages
...line, &c. QED PROP. XIV. THEOR. IF, at a point in a straight line, two other straight lines, upon the **opposite sides of it, make the adjacent angles together...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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