What are Dimensions?

Dimensions in math are the measure up of the size or distance of an object or an ar or space in one direction. In easier terms, that is the measure up of the length, width, and also height that anything.

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Any thing or surroundings or room can be

One-dimensional (or 1D)

Two-dimensional ( or 2D)

Three-dimensional (or 3D)

For example,


Zero Dimensional

A suggest is a zero-dimensional object as it has actually no length, broad or height. It has no size. It tells about the place only.

One Dimensional

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


Two Dimensional

The 2-dimensional shapes or objects in geometry space flat airplane figures that have actually two size – length and width. Two-dimensional or 2-D shapes execute not have any thickness and also can it is in measured in just two faces.

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


Three dimensional

In geometry, three-dimensional forms are solid numbers or objects or shapes that have three dimensions – 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 length, width, and also height.

Take for instance a cuboid,


The qualities of the cuboid room faces, edges, and vertices. The three dimensions create the edges of a 3D geometric shape.

Some examples of three-dimensional shapes:

3-D shapesExamples


Rubric cube













Rectangular prism and cuboid





Every three-dimensional figure houses countless two-dimensional figures. We can by authorized together many two-dimensional figures we get a three-dimensional figure.


Fun fact

We can have much more than three dimensions in mathematics, but it will be hard to attract on paper.

See more: Compute The Critical Value Za/2 ), Z Alpha/2 (Za/2): What It Is, How To Find It

Let’s do

Identify two-dimensional shapes within the three-dimensional shapes provided below.