| Euclides - 1816 - 588 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...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 of AB, make the adjacent... | |
| John Playfair - 1819 - 354 pages
...Wherefore, .when a straight line, &c. Q, ED PROP. XIV. THEOR. If, at a point in a straight line, too **other straight lines, upon the -opposite sides of...equal to two right angles, these two straight lines** are in one and the same straight line. At the point B in the straight line AB, let the two straight... | |
| John Mason Good - 1819 - 740 pages
...Prop. XIV. Theor. If, at a point in a straight bit, two other straight lines, upon the opposite ¿act **of it, make the adjacent angles together equal to two right angles, these two straight** linei ¿all be in one and ihe .same straight line. I'rop. XV. Theor. If two straight lines cut one... | |
| John Playfair - Circle-squaring - 1819 - 350 pages
...sides of it, make the adjacent, angles together equal to two right angles, these two straight lines are **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 of AB, make the adjacent... | |
| Peter Nicholson - Mathematics - 1825 - 1046 pages
...together equal to two right angles. Wherefore, when a straight Kne, &c. QED Proposition XIV. Theorem. **If, at a point in a straight line, two other straight...be in one and the same straight line. At the point** В in the straight line AB, let the two straight lines BC, BD upon the opposite sides of AB, make the... | |
| John Playfair - Circle-squaring - 1826 - 326 pages
...together equal to two right angles. \Yherefore, when a straight line, &e. QEJD. . •' PROP. XIV. THEOR. **If, at a point in a straight line, two other straight lines, upon the opposite sides of it, make the** adjaeent angles together equal to two right angles, these two straight lines are in one and the same... | |
| Robert Simson - Trigonometry - 1827 - 546 pages
...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...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 of AB, make the adjacent... | |
| Pierce Morton - Geometry - 1830 - 584 pages
...Straight lines which pass through the same two points lie in the same straight line . . . m. 4 (A) **If at a point in a straight line two other straight lines upon** opposite sides of it make the adjacent augles together equal to two rifcht angles these two straight... | |
| John Playfair - Euclid's Elements - 1832 - 358 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...equal to two right angles, these two straight lines** are in one and the same straight line. At the point B in the straight line AB, let the two straight... | |
| John Playfair - Euclid's Elements - 1833 - 346 pages
...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 lines, upon the** oppo. site sides of it, make the adjacent angles together equal to two right angles, these two straight... | |
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