 | John Playfair - 1806 - 320 sider
...lines ; and the " intersections of one superficies with another are also lines." Book IV v-*~»"WA plane superficies is that in which any two points...line between them lies wholly in that superficies. VI. A plane rectilineal angle is the inclination of two straight lines to one another, which meet together,... | |
 | Robert Simson - 1806 - 546 sider
...superficies is that which hath only length and breadth. The extremities of a superficies are lines. VII. A plane superficies is that in which any two points being taken, See N. the straight line between them lies wholly in that superficies. VIII. •- A plane angle is... | |
 | Isaac Dalby - 1807 - 476 sider
...direction between its extremities ; and is the shortest distance between two points. 7. A plane, or plane superficies, is that in which any two points being taken, the right line between them lies wholly ia that plane or superficies. 8. A rectilineal angle is the inclination... | |
 | John Mason Good - 1813 - 714 sider
...superficies is that which hath only length and breadth. 6. The extremitin of a superficies are lines. 7. A plane superficies is that in which any two points being taken, the straight line between theta lies wholly in that superficies. 8. " A plane angle is the inclination of two lines te one another... | |
 | John Gummere - 1814 - 398 sider
...drawn between any two points. 5. A superficies or surface has length and breadth, but thickness. 6. A plane superficies is that in which any two points...line between them lies wholly in that superficies. -- , t 7- A plane rectilineal angle is the inclination of two straight lines to one another, which... | |
 | Charles Butler - 1814 - 528 sider
...superficies, as the spherical, cylindrical, conical, and many others. According to this definition, a plane superficies "is that in which any two points...line between them lies wholly in that superficies;" the term " plane," in popular language, means that which is perfectly fiat, or level) now if two points... | |
 | 1816 - 764 sider
...fnperficies are therefore lines, and the interactions of fupcrficies with one another are alfo lines. 5. A PLANE SUPERFICIES is that in which any two points being taken, the ftraight line between them lies wholly in that fupcrficies. 6. A PLANE RECTILINEAL ANGLE is the inclination... | |
 | John Gummere - 1817 - 392 sider
...between any two points. 4. A superficies or surface has length and breadth, but not thickness^ ^1 '' ' 6. A plane superficies is that in which any two points being taken, the straight line which joins them lies wholly in that superficies. 7. A plane rectilineal angle is the inclination of... | |
 | John Playfair - 1819 - 350 sider
...superficies are lines ; and the intersec" tions of one superficies with another are also lines." V. A plane superficies is that in which any two points...line between them lies wholly in that superficies. VI. A plane rectilineal angle is the inclination of two straight lines to one another, which meet together,... | |
 | John Playfair - 1819 - 354 sider
...superficies are lines ; and the intersec" tions of one superficies with another are also lines." V. A plane superficies is that in which any two points being taken, thp straight line between them lies wholly in that superficies. VI. A plane rectilineal angle is the... | |
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A plane rectilineal angle is the inclination of two straight lines to one another, which meet together, but are not in the same straight line. 
