pöördevormid

Pöördevormid, also known as rotational shapes or rotational solids, are three-dimensional shapes that can be generated by rotating a two-dimensional shape around an axis. The resulting shape is symmetric around the axis of rotation. The most common example of a pöördevorm is a cylinder, which is formed by rotating a rectangle around one of its sides. Other examples include cones, spheres, and tori. Pöördevormid are often used in mathematics and engineering to model real-world objects and phenomena. They have several important properties, including constant width (the distance between two parallel planes tangent to the shape is constant) and constant surface area to volume ratio. The study of pöördevormid is a branch of geometry known as solid geometry.