Visual Paradox and Oxymoron

 

The triangle is shown as an impossible shape. The angles are connected one above the other, so it makes it unreal. It implies that the light side is above the dark side, and vice versa.  The beam on the bottom is seen as looking down and up. The angle on the left is seen over the one on the right, but the one on the right is seen over the one above. It is a confusion of angles that makes the shape a paradox.   The only way it could be normal would be if one of the angles was shown below the others. It seems as an infinite triangle to my eyes. 

 The wooden cube represents a visual paradox. The columns on the left are normal, but the ones on the right and at the front aren't possible. If the top beams are parallel, then the column at the back isn't able to pass in front of the beam and at the same time be placed at the back of the cube. The image tricks the mind by whether the cube face is the one at the front right, or the one at the top left. Men wouldn't be able to build a cube as this one, because of the mixture between columns and beams. Therefore, this impossible cube is a visual paradox.

The sign above is an oxymoron because it shows two opposite ideas in one. The sign says 'STOP', but is colored green. Green represents GO in traffic indications, but here it gives opposite orders. The color green and the letters STOP show the oxymoron in the image. It should be red 'STOP' or green 'GO'. If I were to see this sign in the street, I wouldn't know whether to stop or continue going. This represents the importance of visuals and colors in daily life, and how each instruction is placed with an specific color.