| Euclid - 1835 - 513 sider
...PROP. XIII. THEOR. The angles which one straight line makes with another upon the one side of it, are **either two right angles, or are together equal to two right angles.** E i. eS. 1. Let the straight line AB make with CD, upon one side of Book I. it, the angles CBA, ABD... | |
| 1835
...13 & 14.) The adjacent angles, which on» straight line makes with another upon, one side of it, are **either two right angles, or are together equal to two right angles:** and, conversely, if the adjacent angles, which one straight line makes with two others at the same... | |
| 1836 - 472 sider
...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 line, two other straight lines, upon the op. posite sides of it,... | |
| 1836 - 335 sider
...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 a given point either without or in the circumference which shall touch... | |
| Andrew Bell - 1837 - 240 sider
...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...either two right angles, or are together equal to** AEA two right angles. For, if the angle CBA he equal to ABD, each of them is a right angle (Def. 10);... | |
| Euclid, James Thomson - 1837 - 390 sider
...done. 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 angle CBA be equal AKA to ABD, each of them (I. def.... | |
| John Playfair - 1837 - 318 sider
...angles. Let the straight line AB make with CD, upon one side of it the angles CBA, A BD ; 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.) ; but, if not, from... | |
| Euclides - 1837 - 88 sider
...PROPOSITION XIII. Theorem, 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.** Fig.l. A Fig. 2. 1) Steps of the Demonstration. (In fig. 1, the Z DBA = Z ABC .'. each is a rt. Z).... | |
| Euclides - 1838
...PROP. XIII. THEOR. , , The angles which one straight line maket 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 the angle CBA... | |
| Euclid, Robert Simson - 1838 - 416 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 AEA D B DB C (def. 1 0.) angle ; but,... | |
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