| Euclides - 1845 - 546 pages
...one another though produced. IX. A solid angle is that which is made by the meeting, in one point, of more than two plane angles, which are not in the same plane. X. Equal and similar solid figures are such as are contained by similar planes equal in number and... | |
| Euclid, John Playfair - Euclid's Elements - 1846 - 334 pages
...parallel to one another, which do not meet, though produced ever so far. 8. A solid angle is an angle made by the meeting of more than two plane angles, which are not in the same plane in one point. PROP. I. THEOR. One part of a straight line cannot be in a plane and another part above it. If it be... | |
| W. M. Buchanan - Science - 1846 - 768 pages
...adjacent angles, because one leg, AD, is common to both. A solid angle is "formed by the meeting of two plane angles, which are not in the same plane, in one point." — Euclid. Solid angles do not, like other subjects of geometrical investigation, admit of accurate... | |
| Euclides - 1846 - 292 pages
...meet one another though produced. ix. A solid angle is that which is made by the meeting in one point of more than two plane angles, which are not in the same plane. x. Equal and similar solid figures are such as are contained by similar planes equal in number and... | |
| Samuel Hunter Christie - 1847 - 172 pages
...dihedral angle: thus the planes MD, AD are the faces, and DC is the edge of the dihedral angle MDCA. 12. A solid angle is that which is made by the meeting...angles, which are not in the same plane, in one point. It is called a Trihedral angle, a Tetrahedral angle, a Pentahedral angle, &c., according as it is made... | |
| Euclides - 1848 - 52 pages
...one another though produced. IX. A solid angle is that which is made by the meeting, in one point, of more than two plane angles, which are not in the same plane. X. XI. Similar solid figures are such as have all their solid angles equal, each to each, and are contained... | |
| William Somerville Orr - Science - 1854 - 534 pages
...planes are such" as da not intersect, though produced ever so far in all directions. Л solid anglo Í3 that -which is made by the meeting of more than two plane angles, which aro not in the same plane, in one point. PROPOSITION 1.— THEOREM. Onejwttf. (ÄB) of a ttraight line... | |
| Euclides - 1855 - 270 pages
...meaning of this definition is that that the apace between the planes is always of the same width. IX. A solid angle is that which is made by the meeting of more than two plane angles in one point, but "which are not in the same plane. The term solid, here applied to an angle, merely... | |
| Euclides - 1855 - 230 pages
...ever so far in every direction. 7. A SOLID ANGLE is that which is made by the meeting in one point of more than two plane angles, which are not in the same plane. 8. EQUAL AND SIMILAR SOLID FIGURES, CBED, HGLK, are such as are contained by similar planes equal in... | |
| Eucleides - 1860 - 396 pages
...ever so far in every direction. 7. A SOLID ANGLE is that which is made by the meeting in one point of more than two plane angles, which are not in the same plane. 8. EQUAL AND SIMILAB SOLID FIGUBES, CBED, HGLK, are suchas are contained by similar planes equal in... | |
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