| Euclides - 1841 - 351 sider
...done. PROP. XIII. THEORThe angles which one straight line makes with another upon one side of it, are **either two right angles, or are together equal to...CD, upon one side of it, the angles CBA, ABD; these** shall be either two right angles, or shall be together equal to two right angles. For if the angle... | |
| University of Cambridge - 1841
...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
...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...CD, upon one side of it, the angles CBA, ABD: these** shall either be two right angles, or shall together be equal to two right angles. For if the angle... | |
| John Playfair - 1842 - 317 sider
...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
...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
...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
...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...with CD, upon one side of it, the angles CBA, ABD.** Then these shall be either two right angles, or shall be together, equal to two right angles. E A i... | |
| Euclid, James Thomson - 1845 - 352 sider
...PROP. XIII. THEOR. — The angles which one straight line makes with another upon the one side of it **are together equal to two right angles. Let the straight...upon one side of it, the angles CBA, ABD ; these are** together equal to two right angles. For, if the ancle CBA be equal to ABD, each of them (I. def. 8)... | |
| Euclid - 1845 - 199 sider
...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... | |
| Scottish school-book assoc - 1845
...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... | |
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