Minecraft wiki entry for Creating_shapes, associated text: Blocky shapes, such as squares and rectangles, are relatively easy to make in Minecraft, because of the fact that the world is made up of square blocks. On the other hand, other shapes, such as circles and triangles, are more difficult to make. Although there can never be a perfect circle or perfect triangle in the blocky world of Minecraft, this tutorial shows the closest to a circle or triangle you can make.