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.**

http://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.

- 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 V**ertex**.

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, **Curvedsurface area**

(Area of curved surfaces),

**Lateral**

surface area

surface area

(Area of flat surfaces),

**Total surface**

areaand

area

**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 1^{st}

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.

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