 | Euclides - 1816 - 588 pàgines
...I.. Let the straight line AB make with CD, upon one side v-*"V-' of it, the angles CBA> ABD : these are either two right angles, or are together equal to two right angles. • * For if the angle CB A be equal to ABD, each of them is a % A ' E DB D B C 1 Def. 10. right4 angle;... | |
 | John Playfair - 1819 - 354 pàgines
...pendicular CH has been drawn to the given straight line AB. Which ivas to be done. PROP. XIII. THEOR. The angles which one straight line makes with another...angles, or are together equal to two right angles. Let the straight line AB make with CD, upon one side of it, the angles CBA, ABD ; these are either... | |
 | John Playfair - 1819 - 350 pàgines
...right angles. Let the straight line AB make witK CD, upon one side of it, the angles CBA, ABD ; these are either two right angles, or are together equal to two right angles. For, if the angle CBA be equal to ABD, each of them is a right angle (Def. 7.) ; but, if not, from... | |
 | Euclides - 1821 - 294 pàgines
...former (per 8th ) PROP. 13, THEOR. WTten a right line standing upon another makes angles with it, they are either two right angles or are together equal to two right angles, If the right line standing on the other be perpendicular to it, the angles are both right ; if not,... | |
 | Peter Nicholson - 1825 - 1046 pàgines
...it, are either two right angles, orare together equal to two right angles. angles СВЛ, ABD ; these are either two right angles, or are together equal to two right angles. For if the angle CBA be equal to ABD, each of them i« a right (Def. 10.) angle ; but; if not',' from... | |
 | Euclid, John Playfair - 1826 - 326 pàgines
...been drawn to the given straight line AB. Whieh was to be done, f PROP. XIII. THEOR. The angles whieh one straight line makes with another upon one side of it, are either two right angles, or are to^ gether equal tq two right angles. Let the straight line AB make with CD, upon one side of it the... | |
 | Robert Simson - 1827 - 546 pàgines
...perpendicular CH has been drawn to the given straight line AB. Which was to be dbne. PROP. XIII. THEOR. The angles which one straight line makes with another...angles, or are together equal to two right angles. Let the straight line AB make with CD, upon one side of it, the angles CBA, ABD: these shall either... | |
 | Pierce Morton - 1830 - 584 pàgines
...Spherical Triangles. ' PROP. 8. The angles which one spherical arc make* with another upon one fide of it are either two right angles, or are together equal to two right angles. See the Demonstration of Book I. Prop. 2. Cor. 1 . If two spherical arcs cut one another, the vertical... | |
 | John Playfair - 1832 - 358 pàgines
...been drawn to the given straight line AB. Which was to be done. PROP. XIII. THEOR. The angles ichich one straight line makes with another upon one side...angles, or are together equal to two right angles. Let the straight line AB make with CD, upon one side of it the angles CBA, ABD ; these are either two... | |
 | John Playfair - 1833 - 346 pàgines
...to be done. PROP. XIII. THEOR. The angles which one straight line makes with another upon one tide of it, are either two right angles, or are together equal to two right angles. Let the straight line AB make with CD, upon one side of it the angles CBA, ABD ; these are either two... | |
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The angles which one straight line makes with another upon one side of it, are either two right angles, or are together equal to two right angles. 
