Line

 

Dynamic lines:

Leonardo da Vinci: The virgin and child with Saint Anne:

Note the strong diagonal dynamic lines:

Leonardo_da_vinci,_The_Virgin_and_Child_with_Saint_Anne_01Leonardo_da_vinci,_The_Virgin_and_Child_with_Saint_Anne_02Leonardo_da_vinci,_The_Virgin_and_Child_with_Saint_Anne_03