Explore the properties of 2D shapes from one-sided circles to the ... Find out what makes a shape symmetrical. What are 3D shapes? Learn about 3D shapes and their properties.

One program that demonstrates this well is Feather, an iPad app that allows 2D artists to 'draw' in 3D. Now fully offline, ...

A polygon is a 2D shape with straight sides that meet at vertices. Polygons have names that show the number of sides they have. A three-dimensional (3D) shape is a solid shape. 3D shapes have ...