Tri-Fi Defies the Eye Tuesday, 4th Feb, 2025 by Krilling for Company in Fibonacci Sequence, Geometry, Mathematics, Optical Illusions and tagged 13x5 triangle, fake triangle, Fibonacci numbers, geometric dissections, geometric tricks, geometrical illusions, missing square puzzle | Leave a comment The Missing Square Puzzle An animation of the puzzle Elsewhere Other-Accessible… • Missing square puzzle — all is explained at Wikipedia