 | S. Holker Haslam, Joseph Edwards - Conic sections - 1881 - 168 pages
...GENERAL PROPERTIES OF CONICS. DEFINITIONS. • 1. The curve traced out by a point [P], which moves In one plane in such a manner that its distance from a fixed point [S] always bears the same ratio to its perpendicular distance from a fixed straight line [MM'], is... | |
 | S. Holker Haslam, Joseph Edwards - Conic sections - 1881 - 168 pages
...GENERAL PROPERTIES OF CONICS. DEFINITIONS. 1. The curve traced out by a point [P], which moves in one plane in such a manner that its distance from a fixed point [S] always bears the same ratio to its perpendicular distance from a fixed straight line [MM'], is... | |
 | Simon Newcomb - Geometry, Analytic - 1884 - 462 pages
...and the poles p and r. QED CHAPTER V. THE PARABOLA. Equation of the Parabola. 97. Def. A parabola is the locus of a point which moves in a plane in such a way that its distances from a fixed point and from a fixed straight line in that plane are equal. The... | |
 | B.K. Dev Sarma - 2003 - 676 pages
...0) and (-6, 0) is always 20. Find the locus olP. 14 The Hyperbola 14.1 DEFINITION The hyperbola is the locus of a point which moves in a plane in such a way that iu> distance from a fixed point in the plane bears a constant ratio greater than unity to... | |
| |
The locus of a point which moves in a plane in such a way that the ratio of its distance from a fixed point to its distance from a fixed line is constant is called a conic. 