an extremely steep face | the quality of being at right angles to a given line or plane (especially the plane of the horizon) |
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 | the relation of opposition between things at right angles |
a Gothic style in 14th and 15th century England; characterized by vertical lines and a four-centered (Tudor) arch and fan vaulting | |
a straight line at right angles to another line | |