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2 definitions found
 for Plane curve
From The Collaborative International Dictionary of English v.0.48 :

  Plane \Plane\, a. [L. planus: cf. F. plan. See Plan, a.]
     Without elevations or depressions; even; level; flat; lying
     in, or constituting, a plane; as, a plane surface.
     [1913 Webster]
  
     Note: In science, this word (instead of plain) is almost
           exclusively used to designate a flat or level surface.
           [1913 Webster]
  
     Plane angle, the angle included between two straight lines
        in a plane.
  
     Plane chart, Plane curve. See under Chart and Curve.
        
  
     Plane figure, a figure all points of which lie in the same
        plane. If bounded by straight lines it is a rectilinear
        plane figure, if by curved lines it is a curvilinear plane
        figure.
  
     Plane geometry, that part of geometry which treats of the
        relations and properties of plane figures.
  
     Plane problem, a problem which can be solved geometrically
        by the aid of the right line and circle only.
  
     Plane sailing (Naut.), the method of computing a ship's
        place and course on the supposition that the earth's
        surface is a plane.
  
     Plane scale (Naut.), a scale for the use of navigators, on
        which are graduated chords, sines, tangents, secants,
        rhumbs, geographical miles, etc.
  
     Plane surveying, surveying in which the curvature of the
        earth is disregarded; ordinary field and topographical
        surveying of tracts of moderate extent.
  
     Plane table, an instrument used for plotting the lines of a
        survey on paper in the field.
  
     Plane trigonometry, the branch of trigonometry in which its
        principles are applied to plane triangles.
        [1913 Webster]

From The Collaborative International Dictionary of English v.0.48 :

  Curve \Curve\, n. [See Curve, a., Cirb.]
     1. A bending without angles; that which is bent; a flexure;
        as, a curve in a railway or canal.
        [1913 Webster]
  
     2. (Geom.) A line described according to some low, and having
        no finite portion of it a straight line.
        [1913 Webster]
  
     Axis of a curve. See under Axis.
  
     Curve of quickest descent. See Brachystochrone.
  
     Curve tracing (Math.), the process of determining the
        shape, location, singular points, and other peculiarities
        of a curve from its equation.
  
     Plane curve (Geom.), a curve such that when a plane passes
        through three points of the curve, it passes through all
        the other points of the curve. Any other curve is called a
        curve of double curvature, or a twisted curve.
        [1913 Webster]

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