Definition of Directrix. Meaning of Directrix. Synonyms of Directrix

Here you will find one or more explanations in English for the word Directrix. Also in the bottom left of the page several parts of wikipedia pages related to the word Directrix and, of course, Directrix synonyms and on the right images related to the word Directrix.

Definition of Directrix

Directrix
Directrix Di*rect"rix, n.; pl. E. Directrixes, L. Directrices. 1. A directress. [R.] --Jer. Taylor. 2. (Geom.) (a) A line along which a point in another line moves, or which in any way governs the motion of the point and determines the position of the curve generated by it; the line along which the generatrix moves in generating a surface. (b) A straight line so situated with respect to a conic section that the distance of any point of the curve from it has a constant ratio to the distance of the same point from the focus.

Meaning of Directrix from wikipedia

- a directrix is a curve ****ociated with a process generating a geometric object, such as: Directrix (conic section) Directrix (generatrix) Directrix (rational...
- particular point, called a focus, and some particular line, called a directrix, are in a fixed ratio, called the eccentricity. The type of conic is determined...
- circular directrix. For the ellipse, both the focus and the center of the directrix circle have finite coordinates and the radius of the directrix circle...
- directrix). The focus does not lie on the directrix. The parabola is the locus of points in that plane that are equidistant from both the directrix and...
- called a directrix. A cone can be generated by moving a line (the generatrix) fixed at the ****ure apex of the cone along a closed curve (the directrix); if...
- — the apex or vertex — and any point of some fixed space curve — the directrix — that does not contain the apex. Each of those lines is called a generatrix...
- the directrix. Conversely, two tangents which intersect on the directrix are perpendicular. This implies that, seen from any point on its directrix, any...
- ellipse called the directrix: for all points on the ellipse, the ratio between the distance to the focus and the distance to the directrix is a constant....
- circular directrix related to F 1 {\displaystyle F_{1}} . This property should not be confused with the definition of a hyperbola with help of a directrix (line)...
- the directrix plane. (2) All rulings intersect a fixed line, the axis. The conoid is a right conoid, if its axis is perpendicular to its directrix plane...
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