Hope you have all seen a Rubix cube, a ball, an ice- cream cone. You must have observed that these objects involve attributes like vertices, faces, and edges. This is called Solid Geometry. Shapes that can be measured in 3 directions (the x, y and z axis) are called 3- Dimensional Shapes. They are also called Solid objects.
Now consider the Rubix cube. The three dimensions of the cube are length, width and height. Now lets discuss the attributes of a cube. We will have to find out how many faces, vertices and edges a cube has.
- The flat surfaces of the solid objects are called Faces.
- The line segment where the two faces meet is called the Edge.
- The point where three edges meet is called the Vertex.
So let us count it for a Cube.
- Number of faces = 6
- Number of edges = 12
- Number of vertices = 8
Like the cube we have other 3- D shapes like cuboid, cone, prism, pyramid, sphere, cylinder, etc. The number of faces, edges and vertices are different for each 3- D shape. They make the properties of the shape.
What do we do with these three dimensions?
We can define the surface area and volume of each object. The total area of the flat surfaces, curved surfaces and the base areas are called the Total Surface Area.
Volume can simply be called the capacity of the 3- D shape. Through out solid geometry we will learn, Curved surface area (Area of curved surfaces), Lateral surface area (Area of flat surfaces), Total surface area and Volume of solid shapes.
Here in these free worksheets, you will learn to identify all the 3- D shapes, the properties of each shape and practice exercises to know the faces, edges and vertices of those shapes. For the Kindergarten and 1st grade students, these worksheets form the base of 3- Dimensional objects. A lot of coloring, matching, cutting- glueing activites and multiple choice questions test your kids understanding on Solid Geometry. Download all our worksheets and compare the 3- D shapes with the objects in your house. Lets learn to use geometry in real life.