 | John Playfair - 1842 - 332 sider
...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... | |
 | Euclides - 1842 - 316 sider
...parallel to one another, which do not meet, though produced ever so far. VIII. 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... | |
 | Euclid - 1845 - 218 sider
...another. VIII. Parallel planes are such as do not meet one another though produced. IX. A solid angle is that which is made by the meeting of more than two...angles, which are not in the same plane, in one point. XI". Similar solid figures are such as have all then- solid angles equal, each to each, and which are... | |
 | Euclides - 1845 - 546 sider
...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 - 1846 - 334 sider
...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... | |
 | Euclides - 1846 - 292 sider
...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... | |
 | W. M. Buchanan - 1846 - 768 sider
...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... | |
 | Samuel Hunter Christie - 1847 - 172 sider
...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 of more than two...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 sider
...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 - 1854 - 534 sider
...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... | |
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A solid angle is that which is made by the meeting of more than two plane angles, which are not in the same plane, in one point. X. ' The tenth definition is omitted for reasons given in the notes. 
