| Euclides - 1855 - 270 pages
...the straight line AB make with СD, upon one side of it, the two angles С BA, A 3 D. The*e angles **are either two right angles, or are together equal to two right angles.** For if the angle С BA bo equal to the angle ABD, each of them is a right angle (Def. 10). But if the... | |
| John Playfair - Euclid's Elements - 1856 - 346 pages
...line AB. PROP. XIII. THEOR. The angles which one straight line makes with another upon one side uf **it, are, either two right angles, or are together...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... | |
| Henry White - 1856 - 168 pages
...parallelogram, proportion, reciprocal proportion. 17 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.** 18 Divide a straight line into two parts, so that the rectangle contained by the whole and ono of the... | |
| Cambridge univ, exam. papers - 1856 - 200 pages
...can always be divided into two isosceles triangles. 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.** 3. If a straight line fall upon two parallel straight lines, it makes the alternate angles equal to... | |
| Elias Loomis - Conic sections - 1857 - 242 pages
...equal to each other. PROPOSITION II. THEOREM. The angles which one straight line makes w^tk another, **one side of it, are either two right angles, or are together** equJ< to two right angles. Let the straight line AB make with CD, upon one side of it, the angles ABC,... | |
| War office - 1858 - 578 pages
...square root of (1) 49084036 (2) 901. •• Euclid. 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. The straight lines which join the extremities of two equal and parallel straight lines towards the... | |
| W. Davis Haskoll - Civil engineering - 1858 - 422 pages
...of everyday use in surveying : — The 13th, Book I. 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.** The 14th, Book I. If at a point in a straight line, two other straight lines, upon the opposite sides... | |
| Elias Loomis - Conic sections - 1858 - 256 pages
...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.** For if the angle ABC is equal to ABD, each of them is a right angle (Def. 10) ; but c K D if not, suppose... | |
| Euclides - 1858 - 248 pages
...If equals be added to equals, the wholes are equal. P. 13. The angles which one st. line makes with **another upon one side of it, are either two right angles, or** together are equal to two rt. angles. Ax. 1. Magnitudes equal to the same, are equal to each other.... | |
| Sandhurst roy. military coll - 1859 - 672 pages
...yard. Euclid. 1. Define a right angley and show that 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. Describe a parallelogram equal to a given rectilineal figure, and having an angle equal to a given... | |
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