 | University of Cambridge - 1841 - 546 Seiten
...Calculus is not to be employed.] t* THE angles which one straight line makes with another upon the une side of it are either two right angles, or are together equal to two right angles. 2. Describe an isosceles triangle, having each of the angles at the base double of the third angle.... | |
 | Euclides - 1842 - 316 Seiten
...these is a right angle. 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 CD, upon one side of it, the angles CBA, ABD: these shall either be two right angles,... | |
 | John Playfair - 1842 - 332 Seiten
...right angles. Let the straight line AB make with 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.) ; bnt, if not, from... | |
 | Chambers W. and R., ltd - 1842 - 744 Seiten
...because, as lias been already stated, tbe angles made by one straight line falling upon another, arc either two right angles, or are together equal to two right angles ; therefore, the angles CBA, BAG, ACB, are equal to two right angles, or 180 degrees. There ore several... | |
 | 1843 - 582 Seiten
...this passage taken ? MATHEMATICS. SENIOR. 1. 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. 2. Define a parallelogram. Parallelograms on the same base and between the same parallels are equal... | |
 | Euclides - 1845 - 546 Seiten
...line AB. QEF PROPOSITION XIII. THEOREM, The angles which one straight line makes wilh 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 CD, upon one side of it, the angles CBA, ABD. Then these shall be either two right angles,... | |
 | Scottish school-book assoc - 1845 - 444 Seiten
...PROPOSITION I. — THKOREM. The angles ACD and DCB, which one straight line, DC, makes with another, AB, on one side of it, are either two right angles, or are together equal to two right angles. A If the Ls ACD and DCB be equal, each of them is a i'L, (Def. 9.) ; but if they are not equal, conceive... | |
 | Euclid - 1845 - 218 Seiten
...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. EUCLID'S ELEMENTS. For if the angle CBA be equal to ABD, each of them { 10 DeV. 2 Ax. 2 AX. D CD is... | |
 | Great Britain. Admiralty - 1846 - 128 Seiten
...Eu. of it, Zs DBA, ABC; then /_ DBA + Z. 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 AB make with DC, on the same side ABC=2rt. Zs DBCDBC If L ABC = L DBA, Der. 10. each of them is a rt.... | |
 | Euclid, John Playfair - 1846 - 334 Seiten
...right angles. Let the straight line AB make with 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 he equal to ABD, each of them is a right angle (Def. 7.) ; but, if not, from... | |
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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 right... 
