 | John Mason Good - 1819 - 800 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... | |
 | 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 lines, upon the opposite sides of it, make the adjacent angles, together equal to two right angles, these... | |
 | Euclid, John Playfair - Euclid's Elements - 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... | |
 | 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 lines, upon the opposite sides of it, make the adjacent angles together equal to two right angles, these two... | |
 | 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... | |
 | Thomas Perronet Thompson - Euclid's Elements - 1833 - 168 pages
...to two right angles, and those on both sides will be equal to four. PROPOSITION XIII. THEOBEM. — If, at a point in a straight line, two other straight...adjacent angles together equal to two right angles; those two other straight lines shall be in one and the same straight line. At the point B in the straight... | |
 | Euclides - 1834 - 518 pages
...QED ' PROPOSITION XIV. THBOR. — If, at a point in a straight line, two oiher straight lines, upon the opposite sides of it, make the adjacent angles together equal to two right angles, these Iwo straight lines shall be in one and the same straight line. At the point B, in the straight line... | |
 | Euclid - 1835 - 540 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 opposite sides of it, make the adjacent angles, together equal to two right angles, these... | |
 | Mathematics - 1835 - 684 pages
...Straight lines which pass through the same two points lie in the same straight line . . . ax. 4 (J>) If at a point in a straight line two other straight lines upon opposite sides of it make the adjacent angles together equal to two right angles, these two straight... | |
 | John Playfair - Geometry - 1836 - 148 pages
...makes with another on the same side of it, are together equal to two right angles. PROP. II. THEOR. If, at a point in a straight line, two other straight...equal to two right angles, these two straight lines shall be in the same straight line. At the point B in the straight line BD, let the straight, lines... | |
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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. 
