A combination of different lines into closed or open geometrical

Open shapes have a gap or gaps in between. Closed shapes have no openings or gaps. Sides of an open shape do not meet. Sides of closed shapes can be traced from start to finish.

variety in color and variety in texture

based on the images pictured above, the major difference between the two cathedrals: the cathedral of notre dame and the amiens cathedral, is that the cathedral of notre dame emphasizes the horizontal lines while the amiens cathedral emphasizes the vertical lines.