 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.  Annual Report - Page 361868Full view - About this book
 | War office - 1861 - 714 pages
...the square root of '00497025. EL-GLIB. i. 1. The angles which one straight line makes with another on one side of it are either two right angles or are together equal to two right angles. 2. If a straight line be divided into any two parts, the square on the whole line is equal... | |
 | Elias Loomis - Conic sections - 1861 - 254 pages
...angles are equal to each other. PROPOSITION II. THEOREM. The angles which one straight line makes w'th another, upon one side of it, are either two right angles, or are together lo two right angles. Let the straight line AB make with CD, upon one side of it, the angles ABC, ABD... | |
 | Euclides - 1862 - 172 pages
...Therefore CH Is perpendicular to AB, and it has been drawn from the point CQEF PROP. XIII. — THEOREM. The angles which one straight line makes with another...two right angles, or are together equal to two right angles. (References— Prop. i. 11; ax. 1, 2; def. 10.) Let the straight line AB make with CD, upon... | |
 | Euclides - 1862 - 140 pages
...point C, a perpendicular has been drawn to the given straight line AB. QEF PROPOSITION- 13.— THEOREM. The angles which one straight line makes with another...of it, are either two right angles, or are together equai to two right angles. (References— Prop. I. 11; ax. 1, 2; def. 10.) Hypothesis. — Let the... | |
 | S. M. Saxby - Marine engines - 1862 - 200 pages
...Euclid's theorems may here be introduced with advantage. Book I. XIII. — The angles which one right line makes with another upon one side of it are either...two right angles or are together equal to two right angles. Departing from the precise language of absolute and complete proof (for obvious reasons), we... | |
 | Euclides - 1863 - 74 pages
...all Artificers, Surveyors, and Engineers. PKOP. 13. — THEOR. The angles which one st. line mahes with another upon one side of it are either two right angles, or together equal to two right angles. CON.— P. 11.— DZM.— Def. 10, Ax. 8, Ax. 2, Ax. 1. B. 1 Hyp.... | |
 | Euclides - 1864 - 448 pages
...has been drawn to the given straight line AB. QEF. PROPOSITION XIII. THEOREM. The angles which otie straight line makes with another upon one side of...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. Then these... | |
 | Alfred Challice Johnson - Plane trigonometry - 1865 - 166 pages
...triangle be equal, the angles opposite those sides are also equal, and vice versa. (Eue. L, 5, б.) 2. The angles which one straight line makes with another...two right angles, or are together equal to two right angles, or 180°. (Eue. I., 13.) 3. If two straight lines cut one another, the vertical or opposite... | |
 | Euclides - 1865 - 402 pages
...I, 46. Theorems. A. Relating to Angles formed by the Meeting or Intersection of Straight Lines. 1. The angles which one straight line makes with another...two right angles, or are together equal to two right angles .... ... I. 13. 2. If, at a point in a straight line, two other straight lines, upon the opposite... | |
 | John Robertson (LL.D., of Upton Park sch.) - Examinations - 1865 - 106 pages
...Define (i.) a plane angle, (ii.) a right angle, (iii.) a semicircle, and (iv.) parallel lines. [KC] 38. The angles which one straight line makes with another...two right angles or are together equal to two right angles. [KC] 39. The straight lines which join the extremities of two equal and parallel straight lines... | |
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