👉 A spiral is a type of geometric shape that can be defined as a curve where each point on it has one line connecting to another. It's an important concept in mathematics and geometry, particularly in the study of circles, spheres, and other shapes. The term "spiral" comes from the Latin word "sper," which means "turning." In this context, "spirable" refers to a shape that is defined as having a curved surface or an area that can be turned into