visual
the answer is overlapping
Many artists use a technique called 'start-with-rectangle-and-round-the-edges'this creates a near circular people most modern-day people call an oval. We are not sure of the scientifical name of an rounded-edge rectangle, but one thing is for sure, it is not a quadrilateral because not all four edges are present.
cubist
Some items from the Official MC Escher website: Maurits Cornelis Escher (1898-1972) is one of the world's most famous graphic artists. His art is enjoyed by millions of people all over the world, as can be seen on the many web sites on the internet. He is most famous for his impossible structures, such as Ascending and Descending, Relativity, his Transformation Prints, such as Metamorphosis I, Metamorphosis II and Metamorphosis III, Sky & Water I or Reptiles. But he also made some wonderful, more realistic work during the time he lived and traveled in Italy. Castrovalva for example, where one already can see Escher's fascination for high and low, close by and far away. The concept and name was even used for the basis of a Dr Who episode. The lithograph Atrani, a small town on the Amalfi Coast was made in 1931, but comes back for example, in his masterpiece Metamorphosis I and II. M.C. Escher, during his lifetime, made 448 lithographs, woodcuts and wood engravings and over 2000 drawings and sketches. Like some of his famous predecessors such as Michelangelo, Leonardo da Vinci, Dürer and Holbein, M.C. Escher was left-handed. He was influenced by the Alhambra in Spain.
Artists didn't need to use perspective or create the illusion of depth.
The discovery of perspective in art revolutionized how space and depth were depicted, giving artworks a more realistic appearance. This technique allowed artists to create the illusion of three-dimensional space on a two-dimensional surface. It became a fundamental element in Western art, influencing how artists represented the world around them.
Artists use location to direct the viewer's eye.
The use of perspective, linear and atmospheric, create the illusion of depth. As objects recede into the background they appear 'more blue' and have less detail. This technique can be seen in the background of the 'Mona Lisa'.
Chiaroscuro is the use of value contrasts to replicate dimension. Artists make the lightest parts of a subject white, and the darkest shadows black. It is an illusion technique which helps 2-dimensional art portray 3-dimensional subjects.
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Caravaggio
Stippling
called shading. It is a technique used in art to create a sense of depth and volume on a two-dimensional surface. By varying the intensity of light and dark areas, artists can simulate the appearance of form and contours.
MC Escher uses mostly patterns in his work and is one of the most famous artists for using this technique.
they are people who make pictures that make peoples eyes boggle.
By using different shading techniques such as chiaroscuro