 | D. Ponton - Mathematics - 1927 - 168 pages
...taken, the straight line between them lies wholly in that surface. An Angle is the inclination of two lines to one another, which meet together, but are not in the same straight line. The Arms of the angle are the lines which form the angle. The Vertex of the angle... | |
 | Makhan Lal Chaliha - Foreign Language Study - 2002 - 488 pages
...superficies — Plane rectilineal angle "A plane rectilineal angle is the inclinatien of two straight О lines to one another, which meet together, but are not in the same straight line." Planimeter, n. the instrument for measuring the area of a plane figu-e. Plane... | |
| |
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. 
