# 3-dimensional Shapes

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.

https://mathfunworksheets.com/3d-shapes/

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.

1. The
flat surfaces of the solid objects are called Faces.
2. The
line segment where the two faces meet is called the Edge.
3. The
point where three edges meet is called the Vertex.

So
let us count it for a Cube.

1. Number
of faces = 6
2. Number
of edges = 12
3. 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