1. A Gothic style in 14th and 15th century England; characterized by vertical lines, a four-centered (Tudor) arch, fan vaulting; SYN. perpendicular style, English-Gothic, English-Gothic architecture.
2. A straight line at right angles to another line.
3. An extremely steep face.
In mathematics, at a right angle; also, a line at right angles to another or to a plane. For a pair of skew lines (lines in three dimensions that do not meet), there is just one common perpendicular, which is at right angles to both lines; the nearest points on the two lines are the feet of this perpendicular.
Period of English Gothic architecture lasting from the end of the 14th century to the mid-16th century. It is characterized by window tracery consisting chiefly of vertical members, two or four arc arches, lavishly decorated vaults, and the use of traceried panels. Examples include the choir, transepts, and cloister of Gloucester Cathedral, about 1331–1412, and King's College Chapel, Cambridge, built in three phases 1446–61, 1477–85, and 1508–15. + prikaži više

1. A normal line; the portion of a normal line to a plane curve between the curve and the x-axis
2. One that is normal
3. A form or state regarded as the norm; standard