 Nets of 3-D shapes - Orchids The International School
Job Alert : To view our Careers Page Click Here X Geometry

Nets of 3-D shapes

• A three-dimensional shape can be made by folding 2D shapes.
• When a three-dimensional solid is unfolded a two-dimensional shape is obtained.
• Those 2D solids which are used to make a 3D shape are called .

Net of cube

• A cube has 6 faces.
• Each face of the cube is a square. Therefore, when a cube is unfolded it will give 6 squares. • There are 11 nets of a cube.
• The figure of each net is shown below. Not every net which has 6 square faces can be folded into a cube.

Examples: Net of cuboid

• A cuboid has 6 faces.
• Each face of the cuboid is a rectangle. Therefore, when a cuboid is unfolded it will give 6 rectangles. • There are 54 different nets of the cuboid.
• Few nets of the cuboid are shown below. Not every net which has 6 rectangular faces can be folded into a cuboid.

Examples: Net of cylinder

• A cylinder has 3 faces.
• Two of the faces are circular and one is rectangular.
• Therefore, when a cylinder is unfolded it will give 2 circles and 1 rectangle. The figure given below cannot be folded into a cylinder. Net of cone

• A cone has 2 faces.
• One curved face and one flat face.
• A net of cones has two parts:
• One is the circle which represents the flat part.
• The second one is the sector which represents the curved part.
• Therefore, when a cone is unfolded it will give one circle and one sector. The net given below cannot be folded to a cone.   • -