( n. )
That point in which the three perpendiculars let fall from the angles of a triangle upon the opposite sides, or the sides produced, mutually intersect.
( n. )
That point in which the three perpendiculars let fall from the angles of a triangle upon the opposite sides, or the sides produced, mutually intersect.
Webster's Revised Unabridged English Dictionary. Пересмотренный полный словарь английского языка Webster. 2012