How to Draw an Impossible Trident: Easy Optical Illusion

Ready to trick your eyes? This classic impossible object is a fantastic way for artists ages 8+ to explore spatial geometry and perspective. All you need is a pencil, an eraser, and a steady hand to create this mind-bending shape.

10 Steps

🎯 Final Result

A completed, shaded impossible trident drawing, showcasing the mind-bending optical illusion.

Step-by-Step Instructions

Step 1: Sketching the Base Frame

Three connected lines forming a U-shape on a white background, serving as the base for an impossible trident drawing.

Draw three straight lines connected at right angles to form a U-shape. Tip: Keep your lines light and diagonal; the middle line should be noticeably shorter than the outer two to set up the illusion correctly.

Step 2: Capping the First Prong

A small oval drawn at the tip of the first line to represent the top of a trident prong.

Draw a small, neat oval at the end of the leftmost line. Tip: This oval acts as the 'cap' of your prong; make sure it is centered perfectly over the line end.

Step 3: Defining the First Prong

Adding a parallel line and a connector to define the thickness of the first trident prong.

Draw a long line parallel to the first one, starting from the base of the oval. Connect it back to the main structure with a short horizontal stroke. Tip: Use a ruler if you struggle with parallel lines to keep the illusion crisp.

Step 4: Capping the Second Prong

A second small oval added to the tip of the rightmost line of the trident.

Place a small oval at the tip of the rightmost line. Tip: Try to match the size and angle of the first oval to maintain symmetry.

Step 5: Outlining the Second Prong

Drawing a long parallel line to complete the outline of the second trident prong.

Draw a long line parallel to the right prong, extending from the oval. Tip: Ensure this line is perfectly straight to prevent the illusion from looking 'wobbly'.

Step 6: Connecting the Back

Adding a short connecting line between the prongs to begin the illusion of depth.

Draw a short line from the inner edge of the second prong, moving toward the center. Tip: Do not connect it to the first prong yet; leave a small gap to create the 'impossible' effect.

Step 7: Extending the Middle Prong

Drawing a long line that extends past the first prong to form the start of the middle prong.

Extend a line from the previous step, parallel to the first prong, pushing it past the tip. Tip: This is where the magic happens—this line will eventually become the middle prong.

Step 8: Capping the Middle Prong

Adding the final oval to the middle prong to complete the trident structure.

Add an oval to the end of the line you just drew. Tip: This oval should look like it's floating in front of the other two prongs.

Step 9: Finalizing the Geometry

Closing the lines of the trident to finalize the impossible geometry.

Connect the lines to close the shape, ensuring the angles match the rest of the drawing. Tip: If it looks confusing, don't worry—that means the illusion is working!

Step 10: Adding Depth with Shading

The finished impossible trident drawing with shading added to enhance the 3D optical illusion.

Use your pencil to add shading to the sides of the prongs. Tip: Darker shading on the inner edges creates a 3D effect that makes the trident look truly impossible.