Point group

A point group is a set of shapes that have certain properties in common. For example, if you look at a square, it has four sides that are the same length and four angles that are all 90 degrees. This means that a square is part of a point group called a 'square point group'. Other shapes like triangles and circles are also part of different point groups because they have certain properties in common, too. Knowing what point group a shape is in can help us understand how it behaves and how it interacts with other shapes.