The "stubborn" arrow was made by the mathematician Kokiti Sugihara from the Meiji University. The arrow points to the right, even if you rotate it 180 °. In this case, the figure looks symmetrical from above. Optical illusion is obtained due to the peculiarities of the relief.

[![strel2.jpg](https://s7.postimg.cc/bq1kapxaj/strel2.jpg)](https://postimg.cc/image/k8b0f23t3/)

And if you place a mirror behind the arrow, it will always show to the left in the reflection. Here's how it looks.

<iframe width="560" height="315" src="https://www.youtube.com/embed/YuQGQ0XmwLU?rel=0" frameborder="0" allow="autoplay; encrypted-media" allowfullscreen></iframe>

Sugihara is the author of several dozen optical illusions. For example, here is a canopy over the parking space. In reality, it is concave, and in mirror reflection it is sloping.

<iframe width="560" height="315" src="https://www.youtube.com/embed/KtA6u1HIqbg?rel=0" frameborder="0" allow="autoplay; encrypted-media" allowfullscreen></iframe>

Here are triangular, at first glance, figures that look round in the mirror!

<iframe width="560" height="315" src="https://www.youtube.com/embed/oWfFco7K9v8?rel=0" frameborder="0" allow="autoplay; encrypted-media" allowfullscreen></iframe>

### It was interesting? Vote for the post and subscribe to blog updates! Thank you!