 | W J. Dickinson - 1879 - 44 sider
...triangle is isosceles. 13. 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. Same proposition. If the angles are CBA, ABD, and BE bisects ABC, and BF bisects ABD, then FEE is a... | |
 | Isaac Todhunter - 1880 - 426 sider
...THEOREM. The angles which one straight^ line makes with another straight hne on one side of it, either are two right angles, or are together equal to two right angles. ' Let the straight line AB make with the straight line CD, on one side of it, the angles CBA, ABD : these either are two right angles, or... | |
 | Elias Loomis - 1880 - 456 sider
...equal to 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 risrht angles. For if the angle ABC is equal to ABD, each of C u D them is a right angle (Def. 19)... | |
 | Pupil teachers - 1880 - 1486 sider
...triangle is isosceles. 18. 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. Same proposition. If the angles are CBA, ABD, and BE bisects ABC, and BF bisects ABD, then FEE is a... | |
 | 1880 - 594 sider
...the given angle ? 2. 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. Why is this proposition a theorem ? THIRD (OR FOURTH) YEAR. Arithmetic.— MALES. — i. Find the simple... | |
 | Euclides, Frederick Burn Harvey - 1880 - 178 sider
...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. CASE I. — When the angles are equal to each other. Let the straight line AB make with the straight... | |
 | Euclides - 1881 - 236 sider
...another upon one side of it, are either two right anglet, or are together equal to two right anylet. Let the straight line AB make with CD, upon one side of it, the two angle) CBA, ABD. Thee angles ari either two right armies, or ire togt'thei equal to two right auglea.... | |
 | Moffatt and Paige - 1881 - 176 sider
...such as — , +, X.] 1. 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. 2. If from the ends of a side of a triangle, there be drawn two straight lines to a point within the... | |
 | Marianne Nops - 1882 - 278 sider
...XIII., THEOREM 6. The angles which one straight line makes with another, on one side of it, either are, or are together equal to, two right angles. Let the straight line AB make with the straight line CD, on one side of it, the ZS CBA, ABD. These either are, or are together equal to,... | |
 | Free Church of Scotland. College Committee - 1882 - 142 sider
...JAMES MATTHEW, BD 1. 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. 2. If a side of any triangle be produced, the exterior angle is equal to the two interior and opposite... | |
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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... 
