perpendicular

垂直线, 垂直的位置, 直立(姿势), 刚正, 垂规

a straight line at right angles to another line; a Gothic style in 14th and 15th century England; characterized by vertical lines and a four-centered (Tudor) arch and fan vaulting; an extremely steep face

垂直的, 直立的, 陡峭的