Vertical and horizontal lines are an element of Mondrian's art symbolized harmony between opposites.
 
        
             
        
        
        
the Mona lisa is a half-length portrait of Lisa Gherardini by the Italian Renaissance artist Leonardo da Vinci. the painting is a portrait of Lisa Gherardini, the wife of Francesco del Giocondo and is believed to have been painted between 1503 and 1506. Leonardo may have continued working on it as late as 1517.
        
             
        
        
        
Answer: a color wheel is a representation of colors that are arranged by their chromatic relationship, you can use color wheels in different ways one being that you can use it help show you complementary colors, or help you choose what colors you want to use on your art.