 | Robert Simson - 1838 - 434 pàgines
...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 AEA D B DB C (def. 1 0.) angle ; but,... | |
 | Euclides - 1841 - 378 pàgines
...to be 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...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 - 546 pàgines
...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 pàgines
...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...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 - 332 pàgines
...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 pàgines
...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 pàgines
...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 pàgines
...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...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 - 382 pàgines
...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 - 218 pàgines
...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... | |
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The angles which one straight line makes with another upon one side uf 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... 
