 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.  Elements of Geometry - Page 12by Andrew Wheeler Phillips, Irving Fisher - 1897 - 354 pagesFull view - About this book
 | John Playfair - 1819 - 354 pages
...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 upon one side of it, are either two right angles, or are together equal to two right angles. Let the straight line AB make with... | |
 | Euclid, John Playfair - Euclid's Elements - 1826 - 326 pages
...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... | |
 | Robert Simson - Trigonometry - 1827 - 546 pages
...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 upon one side of it, are either two right angles, or are together equal to two right angles. Let the straight line AB make with... | |
 | Pierce Morton - Geometry - 1830 - 584 pages
.... cor. 1 0 (B) Of Ang/rs made by Straight Lines. (a) The adjacent angles, made by one straight Une with another upon one side of it, are, together, equal to two right angles . . 5 (i) If two straight lines cut one another, the vertical or opposite angles are equal . . 5 (c)... | |
 | Euclides - 1834 - 518 pages
...has been drawn to the given straight line AB. Which was to be done. PROPOSITION XIII. THEOR. — 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. Let the straight line AB make with... | |
 | Mathematics - 1835 - 684 pages
.... cor. 1 0 (B) Of Angles made by Straight Lines. (a) The adjacent angles, made by one straight line with another upon one side of it, are, together, equal to two right angles . 5 (*) If two straight lines cut one another, the vertical or opposite angles are equal . . 5 (c)... | |
 | Mathematics - 1836 - 488 pages
...two sides of the one shall be equal to the angle contained by the two sides of the other. XIII. 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. XIV. If, at a point in a straight... | |
 | Mathematics - 1836 - 366 pages
...divided into their pyramids that have triangular bases, and are equal to one another. 1832 14. 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. 1 5. Draw a straight line from... | |
 | Andrew Bell - Euclid's Elements - 1837 - 290 pages
...each of them is a right angle, and CH is perpendicular to AB (Def. 10). PROPOSITION Xm. THEOREM. 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. Let the straight line AB make with... | |
 | John Playfair - Euclid's Elements - 1837 - 332 pages
...given point C a perpendicular CH has been drawn to the given straight line AB. PROP. XIII. THEOR. 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. Let the straight line AB make with... | |
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