What Are Three-Dimensional Shapes?
In geometry, a three-dimensional shape can be defined as a solid figure or an object or shape that has three dimensions—length, width, and height. Unlike two-dimensional shapes, three-dimensional shapes have height, which is the same as thickness or depth. Three dimensional is also written as 3-D and hence, these figures are commonly called 3–D shapes too. All 3-D shapes occupy space, which is measured in terms of volume.
Examples of Three-Dimensional Shapes
A cube, rectangular prism, sphere, cone, and cylinder are the basic 3-dimensional shapes we see around us.
Real-life Examples of Three-Dimensional Shapes
3-D shapes can be seen all around us. We can see a cube in a Rubik’s Cube and a die, a rectangular prism in a book and a box, a sphere in a globe and a ball, a cone in a carrot and an ice cream cone, and a cylinder in a bucket and a barrel around us.
Attributes of Three-Dimensional Shapes
Face: Each single surface, flat or curved, of the 3-D figure is called its face.
Edge: The line, where two faces of the 3-D figures meet, is called its edge.
Vertex: Each corner, where three faces of 3-D figures meet, is called its vertex. Vertices are the plural of the vertex.
List of Three-Dimensional Shapes
Here’s a list of the names of three-dimensional shapes with their pictures, and attributes.
Formula of Three-Dimensional Shapes
Net of Three-Dimensional Shapes
A net is a pattern made when the surface of a 3-D figure is laid out flat, showing each face of the figure.
3-D figures can have more than one net pattern. Net of a few 3-D figures is shown below:
All three-dimensional shapes are made up of two-dimensional shapes.
Difference between 2-D Shapes and 3-D Shapes
Let’s differentiate between 2-D and 3-D shapes by understanding two dimensional and three dimensional shapes and their properties.
Example 1: Which of the following is a 3-D shape?
Cone Square Sphere Cuboid Cylinder Parallelogram
Cone Sphere Cuboid Cylinder
Example 2: State whether the following are true or false.
- A three-dimensional shape has 3 dimensions.
- Three-dimensional shapes are also called flat shapes.
- Three-dimensional shapes occupy space.
- All three-dimensional shapes have flat faces.
- False. Three-dimensional shapes are also called solid shapes.
- False. Sphere is a three-dimensional shape with no flat face.
Example 3: Complete the table with attributes of the 3-D shapes listed.
Example 4: Match the object with its shape.
- – (iii)
- – (i)
- – (iv)
- – (ii)
Three Dimensional Shapes - Definition With Examples
1Which shape has 2 flat faces and one curved face?
Cylinder has two flat faces which are a circle in shape and one curved face.
2How many square shapes does the net of a cube have?
Cube has 6 faces that are squares. So, the net of the cube will have 6 square shapes.
3Which of the following has no edge?
Sphere has one face. So it has no edge.
4Which of the given shapes is NOT a 3-D shape?
Trapezoid is a 2-D shape with four sides with one pair of opposite sides parallel to each other and the other two sides of it are non-parallel.
Frequently Asked Questions
What are the different types of 3-D figures?
Cube, cuboid, cylinder, sphere, cone, prism, and pyramids.
What are the attributes of three-dimensional shapes?
Three-dimensional shapes have 3 dimensions—length, width, and depth. As a result of these dimensions these shapes have attributes of faces, edges and vertices.
What is an edge?
An edge is a line where two faces of a three-dimensional shape meet.
For example, a cube has 12 edges.
What are vertices?
Vertices are corners where three faces meet. For example, a cuboid has 8 vertices.
What is the use of volume of a three-dimensional shape?
Volume helps to find the space occupied by the given shape.