# What I’ve learn’t about 3D shapes…

Throughout term 3, the 5/6s started to learn more about three dimensional shapes. Three dimensional shapes (3D shapes or polyhedron) are shapes the have three dimensions, these dimensions are called: width, height and length. An example of a 3D shape would be a cube which is the most common one, or a square. Any shape can be turned into a 3d, all you have to do is add width because 2D shapes have length and height. There are different types of 3D shapes, some of them are: prism and pyramid. A prism is a shape that has parallel sides which rectangles are and the same face at the start and the end, the edges on them are called vertices and example of one is a triangular prism, this is what they look like.

A pyramid is one of the the two 3D versions of a triangle, the other version is a triangular prism. A pyramid is a four sided 3D shape with triangles for faces. There are different types of pyramids, like a square based pyramid or a triangular based pyramid. The name of the pyramid is determined on its base, with a prism it’s determined on its face. The point where the triangles meet is called the apex. Here is what a hexagonal based pyramid looks like.