How do we identify solids ?

First thing we need to know is 


What is a solid ?


A solid is a 3D or three dimensional shape that has a height, width and depth

* There are 2 main types of solids 

     

     - Polyhedra

     - Non - Polyhedra 

Polyhedra 's must have flat faces 

    Examples: Prisms, and Pyramids

Non- Polyhedra's are if any surface isnt flat 

    Examples: