3D SHAPES

  3D SHAPES

• A 3D shape has three dimensions. Therefore, unlike a 2D shape, it’s not flat. 3D shapes are measured by length, width and depth.

Types of 3D Shapes

• Cube
• Cuboid
• Cone
• Cylinder
• Sphere
• Pyramid
• Prism

Cube

A cube is a solid or three-dimensional shape which has 6 square faces. The cube has the following properties.

• All edges are equal
• 8 vertices
• 12 edges
• 6 faces

Cuboid

A cuboid is also called a rectangular prism, where the faces of the cuboid are a rectangle in shape. All the angles measure 90 degrees. The cuboid has

• 8 vertices
• 12 edges
• 6 faces

Prism

A prism is a 3D shape which consists of two equal ends, flat surfaces or faces, and also has identical cross-section across its length. Since the cross-section looks like a triangle, the prism is generally called a triangular prism. The prism does not have any curve. Also, a prism has

• 6 vertices
• 9 edges
• 5 faces – 2 triangles and 3 rectangles

Pyramid

 A pyramid a solid shape, whose outer faces are triangular and meet to a single point on the top. The pyramid base can be of any shape such as triangular, square, quadrilateral or in the shape of any polygon. The most commonly used type of a pyramid is the square pyramid, i.e., it has a square base and four triangular faces. Consider a square pyramid, it has

• 5 vertices
• 8 edges
• 5 faces

Cylinder

A cylinder is defined as a three-dimensional geometrical figure which has two circular bases connected by a curved surface. A cylinder has

• No vertex
• 2 edges
• 2 flat faces – circles
• 1 curved face

Cone

 A cone is a three-dimensional object or solid, which has a circular base and has a single vertex. The cone is a geometrical figure that decreases smoothly from the circular flat base to the top point called the apex. A cone has

• 1 vertex
• 1 edge
• 1 flat face – circle
• 1 curved face

Sphere

 A sphere is a three-dimensional solid figure which is perfectly round in shapes and every point on its surface is equidistant from the point is called the center. The fixed distance from the center of the sphere is called a radius of the sphere. A sphere has

• No vertex
• No edges
• 1 curved face

Real-Life Examples of 3D Geometric Shapes

In mathematics, we study 3-dimensional objects in the concept of solids and try to apply them in real life. Some real-life examples of 3D shapes are shown below which are a soccer ball, a cube, a bucket, and a book.

FUN FACTS

• Faces. A face is a flat or curved surface on a 3D shape. For example a cube has six faces, a cylinder has three and a sphere has just one.
• Edges. An edge is where two faces meet.
• Vertices. A vertex is a corner where edges meet.