How to draw good optical illusions

Written by katherine barrington Google
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How to draw good optical illusions
Learn how to draw an optical illusion. (Hemera Technologies/AbleStock.com/Getty Images)

An optical illusion, sometimes called a visual illusion, is an image in which the perception actually differs from reality. Popular optical illusions include an image which, depending how you view it, can be either a young woman or an old maid. Drawing optical illusions can be difficult but, with practice, it is a skill you can master. Learn how to draw optical illusions by starting out with a few of the easier designs like the devil's fork and the impossible triangle.

Skill level:
Moderately Easy

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Things you need

  • Pencil and paper

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Instructions

    How to Draw the Devil's Fork

  1. 1

    Draw six horizontal lines on top of each other on a piece of blank paper. The lines should be equal in length and equal distance apart.

  2. 2

    Draw an oval on the end of three pairs of lines to form "pipe" shapes. Draw the oval in between the top two, the bottom two, and the middle two lines.

  3. 3

    Draw small curved lines near the end of each "tube" to make the tubes appear round. Draw three curved lines equal in size and equal distances apart near the oval end of each tube.

  4. 4

    Draw a bracket shape to connect the top line with the bottom line. The bracket should extend outwards from the ends of the horizontal lines so that the four lines in-between the top and bottom line are contained by, but not making contact with, the bracket.

  5. 5

    Connect the ends of the second, third and fourth lines from the top with a vertical line then complete the optical illusion by drawing a short horizontal line to connect the second line from the bottom with the outer wall of the bracket.

    How to Draw the Impossible Triangle

  1. 1

    Create the basic shape of the triangle by first drawing a horizontal line on a blank sheet of paper approximately 5 inches long. At each end of the line, draw a 1/2-inch line extending out from the horizontal line at a 45-degree angle.

  2. 2

    Draw a 5-inch line stemming from the end of each slanted line. These new lines should be angled upward and in toward the centre to create a triangle shape. Rather than giving the triangle a point, however, give it a flattened top that measures a little more than 1/2 inch. The completed shape should be a triangle with a flat top and two slanted sides rather than points.

  3. 3

    Draw a horizontal line directly from point 3 toward point 6 but do not connect the two points. The line should stop about 3/4 of an inch from point 6. Draw another line angled at 45 degrees from point 1 toward point 4 but, again, do not connect the points.

  4. 4

    Draw a short line slanted at a 45-degree angle from the end of the line drawn from point 3 toward point 6 and draw a horizontal line connecting this line with the end of the line drawn from point 1 toward point 4. The horizontal line should be parallel to the lines drawn below it.

  5. 5

    Draw a line slanted at a 45-degree angle from point 5 toward point 2 and stop the line when the space between the end of the line and the line drawn from point 1 to 4 is the same distance between the new slanted line and the short angled line drawn in the last step.

  6. 6

    Draw another line at a 45-degree angle connecting the end of the last line drawn with the horizontal line running parallel to the line drawn from point 3 to 6.

  7. 7

    Finish the optical illusion by continuing the short angled line drawn in Step 4 to connect it with the line running parallel to the line from point 1 to 4. The completed image should look like a 3-dimensional triangle.

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