[Solved] A building is being prepared for opening. People are decorating the building with 12 flags. At first they arrange the flags 4 to a side, as shown, but then they see that the flags can be arranged 5 to a side using only 12 flags. How?

This riddle has been around for some time on internet platforms such as Instagram, Facebook, and WhatsApp, and many people still argue over what the answer might be, as there are many possibilities. The correct answer is Place 2 flags at every corner and 1 flag in the center.