If x, y, and z are three positive axes of the crystallographic coordinate system with origin at point A. 4 27.) In the same diagram, what is the direction of the line EA? a) [0]] b) [111] c) [IT0] d) [010] 28.) In the same diagram, what is the plane of GHDA? a) [301] b) (001) c) (11T) d) (20T)