What are Dimensions?

Dimensions in math are the measure up of the size or street of things or region or room in one direction. In less complicated terms, it is the measurement of the length, width, and height that anything.

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Any object or surroundings or space can be

One-dimensional (or 1D)

Two-dimensional ( or 2D)

Three-dimensional (or 3D)

For example,


Zero Dimensional

A allude is a zero-dimensional object together it has actually no length, width or height. It has no size. That tells around the ar only.

One Dimensional

A line segment attracted on a surface is a one-dimensional object, as it has only length and no width.


Two Dimensional

The 2-dimensional shapes or objects in geometry space flat airplane figures that have two dimensions – length and also width. Two-dimensional or 2-D shapes execute not have any thickness and can be measured in only two faces.

A square, circle, rectangle, and triangle are examples of two-dimensional objects. We deserve to classify figures on the communication of the dimensions they have.


Three dimensional

In geometry, three-dimensional shapes are solid numbers or objects or shapes that have actually three size – length, width, and also height. Unlike two-dimensional shapes, three-dimensional shapes have actually thickness or depth.

A cube and also cuboid are instances of three-dimensional objects, together they have actually length, width, and height.

Take for example a cuboid,


The characteristics of the cuboid space faces, edges, and vertices. The 3 dimensions compose the edges of a 3D geometric shape.

Some examples of three-dimensional shapes:

3-D shapesExamples


Rubric cube













Rectangular prism and also cuboid





Every three-dimensional number houses many two-dimensional figures. We deserve to by joining together plenty of two-dimensional figures we get a three-dimensional figure.


Fun fact

We can have an ext than 3 dimensions in mathematics, however it will be difficult to attract on paper.

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Let’s do

Identify two-dimensional forms within the three-dimensional shapes given below.