| Robert Potts - 1860 - 361 sider
...PROPOSITION XIH. 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...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. £ A... | |
| Popular educator - 1860
...make with D c, upon one side of it, the two angles c BA Fig. 13. and AB D. These angles are ei-.her **two right angles, or are together equal to two right angles. For, if the angle CBA, be equal to** the D angle ADD, then each of them is a light angle, by Def. 10. But, if the angle cn A be not equal... | |
| Euclides - 1860
...PROPOSITION XIII. 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.** '.- Given the straight line AB making with CD, upon one side of it, the angles CBA and ABD ; to prove... | |
| Royal college of surgeons of England - 1860
...parallelogram, rectangle. 2. 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.** Having proved this proposition, state (without proving) its converse. If the two portions ABO, DBC... | |
| ELIAS LOOMIS, LL.D. - 1861
...straight line makes w^th another,upon one side of it, are either two right angles, or are together io **two right angles. Let the straight line AB make with CD, upon one side of it, the angles** ABC, ABD ; these are either two right angles, or are together equal to two right angles. A B *f not,... | |
| S. M. Saxby - 1861 - 112 sider
...advantage. Book I. XIII. — 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.** Departing from the precise language of absolute and complete proof (for obvious reasons), we may say... | |
| Euclides - 1862
...PROP. XIII. — 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.** (References— Prop. i. 11; ax. 1, 2; def. 10.) Let the straight line AB make with CD, upon one side... | |
| S. M. Saxby - 1862 - 179 sider
...advantage. Book I. XIII. — 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.** Departing from the precise language of absolute and complete proof (for obvious reasons), we may say... | |
| Euclides - 1864
...PROPOSITION XIII. 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...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. £ A... | |
| Euclides - 1864
...PROPOSITION XIII. THEOREM. The angles which otie straight line makes with 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. A E... | |
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