PPT: 3D Shapes | Mathematics for Class 4 PDF Download

 Page 1


Understanding 
Shapes
Page 2


Understanding 
Shapes
Types of Shapes
Circle
Round shape with no corners or edges. A perfect circle is the same distance from the 
centre to any point on its edge. Real-world example: A coin.
Square
Four equal sides and four right angles (90°). All sides are the same length and all angles are 
equal. Real-world example: A chessboard square.
Rectangle
Opposite sides are equal, with four right angles. Unlike squares, the length and width are 
different. Real-world example: A book cover.
Triangle
Three sides and three corners. The simplest polygon, triangles come in different varieties 
based on their angles and sides. Real-world example: A slice of pizza.
Two-dimensional (2D) shapes are flat and only have length and width. They do not have any 
depth, making them perfect for representing objects on paper or screens.
Page 3


Understanding 
Shapes
Types of Shapes
Circle
Round shape with no corners or edges. A perfect circle is the same distance from the 
centre to any point on its edge. Real-world example: A coin.
Square
Four equal sides and four right angles (90°). All sides are the same length and all angles are 
equal. Real-world example: A chessboard square.
Rectangle
Opposite sides are equal, with four right angles. Unlike squares, the length and width are 
different. Real-world example: A book cover.
Triangle
Three sides and three corners. The simplest polygon, triangles come in different varieties 
based on their angles and sides. Real-world example: A slice of pizza.
Two-dimensional (2D) shapes are flat and only have length and width. They do not have any 
depth, making them perfect for representing objects on paper or screens.
3D Shapes (Three-
Dimensional)
Three-dimensional shapes have length, width, and depth. This means they have 
volume and can hold things inside them. Unlike 2D shapes, 3D shapes exist in 
the physical world around us.
Cube
Cube
All sides are squares. It 
has 6 faces, 12 edges, 
and 8 corners 
(vertices). A perfect 
cube has equal 
dimensions on all sides.
Properties
3D shapes have faces 
(surfaces), edges 
(where faces meet), and 
vertices (corners where 
edges meet).
Volume
Unlike 2D shapes, 3D 
shapes have volume - 
they occupy space and 
can contain things 
inside them.
Page 4


Understanding 
Shapes
Types of Shapes
Circle
Round shape with no corners or edges. A perfect circle is the same distance from the 
centre to any point on its edge. Real-world example: A coin.
Square
Four equal sides and four right angles (90°). All sides are the same length and all angles are 
equal. Real-world example: A chessboard square.
Rectangle
Opposite sides are equal, with four right angles. Unlike squares, the length and width are 
different. Real-world example: A book cover.
Triangle
Three sides and three corners. The simplest polygon, triangles come in different varieties 
based on their angles and sides. Real-world example: A slice of pizza.
Two-dimensional (2D) shapes are flat and only have length and width. They do not have any 
depth, making them perfect for representing objects on paper or screens.
3D Shapes (Three-
Dimensional)
Three-dimensional shapes have length, width, and depth. This means they have 
volume and can hold things inside them. Unlike 2D shapes, 3D shapes exist in 
the physical world around us.
Cube
Cube
All sides are squares. It 
has 6 faces, 12 edges, 
and 8 corners 
(vertices). A perfect 
cube has equal 
dimensions on all sides.
Properties
3D shapes have faces 
(surfaces), edges 
(where faces meet), and 
vertices (corners where 
edges meet).
Volume
Unlike 2D shapes, 3D 
shapes have volume - 
they occupy space and 
can contain things 
inside them.
Sphere
A sphere is a perfectly round three-dimensional object. Every point on its surface is the same distance from its center. 
Unlike many other 3D shapes, a sphere has no edges or corners.
Perfect Roundness
A sphere is perfectly round in all 
directions, making it one of the most 
symmetrical shapes in geometry.
No Edges or Corners
Unlike cubes or pyramids, spheres 
have no edges or vertices, giving them 
smooth, continuous surfaces.
Real-World Examples
Spheres are common in nature and 
human-made objects: planets, balls, 
fruits, and bubbles all exhibit spherical 
properties.
Page 5


Understanding 
Shapes
Types of Shapes
Circle
Round shape with no corners or edges. A perfect circle is the same distance from the 
centre to any point on its edge. Real-world example: A coin.
Square
Four equal sides and four right angles (90°). All sides are the same length and all angles are 
equal. Real-world example: A chessboard square.
Rectangle
Opposite sides are equal, with four right angles. Unlike squares, the length and width are 
different. Real-world example: A book cover.
Triangle
Three sides and three corners. The simplest polygon, triangles come in different varieties 
based on their angles and sides. Real-world example: A slice of pizza.
Two-dimensional (2D) shapes are flat and only have length and width. They do not have any 
depth, making them perfect for representing objects on paper or screens.
3D Shapes (Three-
Dimensional)
Three-dimensional shapes have length, width, and depth. This means they have 
volume and can hold things inside them. Unlike 2D shapes, 3D shapes exist in 
the physical world around us.
Cube
Cube
All sides are squares. It 
has 6 faces, 12 edges, 
and 8 corners 
(vertices). A perfect 
cube has equal 
dimensions on all sides.
Properties
3D shapes have faces 
(surfaces), edges 
(where faces meet), and 
vertices (corners where 
edges meet).
Volume
Unlike 2D shapes, 3D 
shapes have volume - 
they occupy space and 
can contain things 
inside them.
Sphere
A sphere is a perfectly round three-dimensional object. Every point on its surface is the same distance from its center. 
Unlike many other 3D shapes, a sphere has no edges or corners.
Perfect Roundness
A sphere is perfectly round in all 
directions, making it one of the most 
symmetrical shapes in geometry.
No Edges or Corners
Unlike cubes or pyramids, spheres 
have no edges or vertices, giving them 
smooth, continuous surfaces.
Real-World Examples
Spheres are common in nature and 
human-made objects: planets, balls, 
fruits, and bubbles all exhibit spherical 
properties.
Cylinder
A cylinder is a three-dimensional shape with two identical flat circular ends and one curved side connecting 
them. It has 2 edges (where the curved surface meets the circular ends) and no corners.
2
Flat Circular Ends
A cylinder has two identical circular faces at opposite ends.
1
Curved Surface
The curved surface connects the two circular ends, forming the body of the cylinder.
2
Edges
A cylinder has two circular edges where the curved surface meets the flat ends.
0
Corners
Cylinders have no corners or vertices, giving them a smooth profile.