Cloak for the Dreamer

The tailor has three fine sons.Two of them hope to grow up to be tailors, too, but the third is a dreamer and wants to travel and see the world.One day, the Archduke orders three cloaks.Ivan makes his cloak from rectangles.Alex makes his cloak from triangles.Unfortunately, Misha makes his cloak of circles and leaves big holes between the shapes. Perhaps Misha will never be a tailor.