![](https://i0.wp.com/www.philcain.com/wp-content/uploads/2023/03/distractions-Triangle-no-title-1.jpg?resize=1024%2C536&ssl=1)
Why does a one-square hole open up when we rearrange these shapes, as shown below?
![](https://i0.wp.com/www.philcain.com/wp-content/uploads/2023/03/Missing_Square_Animation.gif?resize=317%2C125&ssl=1)
Click for answer
The longest sides of what appear to be “triangles” are bent. You can read a more thorough explanation here.
I’ll try and come up with a more satisfactory explanation.