per·pen·dic·u·lar /ˌpɝpənˈdɪkjəlɚ/
 垂直線,垂直的位置(a.)垂直的,直立的


 perpendicular
 垂直的


 perpendicular
 垂直


 Per·pen·dic·u·lar a.
 1. Exactly upright or vertical; pointing to the zenith; at right angles to the plane of the horizon; extending in a right line from any point toward the center of the earth.
 2. Geom. At right angles to a given line or surface; as, the line ad is perpendicular to the line bc.
 Perpendicular style Arch., a name given to the latest variety of English Gothic architecture, which prevailed from the close of the 14th century to the early part of the 16th; -- probably so called from the vertical style of its window mullions.


 Per·pen·dic·u·lar n.
 1. A line at right angles to the plane of the horizon; a vertical line or direction.
 2. Geom. A line or plane falling at right angles on another line or surface, or making equal angles with it on each side.

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 perpendicular
      adj 1: intersecting at or forming right angles; "the axes are
             perpendicular to each other" [ant: oblique, parallel]
      2: at right angles to the plane of the horizon or a base line;
         "a vertical camera angle"; "the monument consists of two
         vertical pillars supporting a horizontal slab"; "measure
         the perpendicular height" [syn: vertical] [ant: inclined,
          horizontal]
      3: extremely steep; "the great perpendicular face of the cliff"
      n 1: a straight line at right angles to another line
      2: a Gothic style in 14th and 15th century England;
         characterized by vertical lines and a four-centered
         (Tudor) arch and fan vaulting [syn: perpendicular style,
          English-Gothic, English-Gothic architecture]
      3: a cord from which a metal weight is suspended pointing
         directly to the earth's center of gravity; used to
         determine the vertical from a given point [syn: {plumb
         line]
      4: an extremely steep face