Answer:
Triangle Circle Semi-Circle Square Rectangle Parallelogram Rhombus Trapezium Kite Polygons (Pentagon, Hexagon, Octagon, Nonagon, Decagon, etc.)
C use the same value throughout the entire artwork
If your trying to emphasize something you don’t want it all the same
element ---1.Form
principle----2.value
element----3.texture
principle----4.movement
principle----5.unity/variety
