 | John Playfair - Mathematics - 1806 - 320 pages
...intersections of one superficies with another are also lines." Book IV v-*~»"WA plane superficies is that in which any two points being taken, the straight line between them lies wholly in that superficies. VI. A plane rectilineal angle is the inclination of two straight lines to one another,... | |
 | John Mason Good - 1813 - 714 pages
...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 - Surveying - 1814 - 398 pages
...two points. 5. A superficies or surface has length and breadth, but thickness. 6. A plane superficies is that in which any two points being taken, the straight line between them lies wholly in that superficies. -- , t 7- A plane rectilineal angle is the inclination of two straight lines to one another,... | |
 | Charles Butler - Mathematics - 1814 - 528 pages
...spherical, cylindrical, conical, and many others. According to this definition, a plane superficies "is that in which any two points being taken, the straight line between them lies wholly in that superficies;" the term " plane," in popular language, means that which is perfectly fiat, or level)... | |
 | John Gummere - Plane trigonometry - 1817 - 392 pages
...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 - Circle-squaring - 1819 - 350 pages
...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, the straight line between them lies wholly in that superficies. VI. A plane rectilineal angle is the inclination of two straight lines to one another,... | |
 | Euclid, Robert Simson - Geometry - 1821 - 514 pages
...hath only length and breadth. VI. The extremities of a superficies are lines/ VII. A plane superficies is that in which any two points being taken,* the straight line between them lies wholly in that superficies. VIII. " A plane angle is the inclination of two lines to one another* in, a plane, which... | |
 | Euclid - 1822 - 222 pages
...7. BI The learned Robert Simson gives a different definition of a plane surface. A plane superficies is that in which any two points being taken, the straight line between them lies wholly in' that superficies : this indeed is a well known property of a plane ; but as it can easily be deduced from... | |
 | George Crabb - Industrial arts - 1823 - 704 pages
...Superficies are either plane, rectilinear, curvilinear, convex, or concave. — A plane superficies is that in which any two points being taken, the straight line between them lies wholly in that superficies. — A rectilinear superficies is that which is bounded by right lines. — A curvilinear... | |
 | Peter Nicholson - Mathematics - 1825 - 1046 pages
...hath only length and breadth. 6. The extremities of a superficies are lines. 7. A plane superficies is that in which any two points being taken, the straight line between them lies wholly in that superficies. 8. " A plane angle is the inclination of two lines to one another in a plane, which meet... | |
| |
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. 
