Theory:

When we look around us, we find objects of different sizes and shapes.
 
Shapes come with different measurements such as length, breadth, height, depth and so on, and they are classified into two-dimensional and three-dimensional shapes.
 
Dimension:
Measurement of the shapes from a certain angle or direction is called dimension.
In the case of shapes and objects, dimensions include length, breadth, height and so on.
Two-dimensional shapes
The closed figures drawn on a flat-surface or on a plane are two-dimensional shapes. The sides of these shapes can contain straight or curved surfaces. The shapes can have '\(n\)' number of sides.
These shapes will have length and breadth, hence becoming two-dimensional.
 
\(2\)-D shapes are also called as plane figures.
 
Some of the two-dimensional shapes include:
 
Shape
Name
1235_6.svg
Circle
1235_7.svg
Triangle
1235_8.svg
Square
1235_8_1.svg
Rectangle
1235_9.svg
Ellipse
1235_10.png
Quadrilateral
 
Three-dimensional shapes
Our entire world is made up of objects that occupy space. Any object or a shape that occupies space is three-dimensional.
The \(3\)-D figures are also called as solid figures.
 
Some of the three-dimensional shapes include:
 
 
Shape
Name
1235_11.svg
Sphere
1235_12.svg
Cube
1235_13.svg
Cuboid
1235_14.svg
Cylinder
1235_15.svg
Pyramid
1235_16.svg
Cone