flat
Where a, b, c and d are real numbers such that a, b, and c are not all zero. Alternatively, a plane can also be parameterized as a set of all points with the form u + s v + t w, where s and t are taken over all real numbers, and u, v, and w are vectors given for defining the plane. The plane is uniquely identified by any of the following combinations: ▪ Three non-collinear points (not on the same line) ▪ One straight line and one line away ▪ One point and one straight line perpendicular to the plane ▪ Two intersecting lines ▪ Two Parallel lines in three dimensions, two different planes or parallel or intersecting a straight line. Do not intersect the straight line parallel to a given plane at one point. ...