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Shapes (Year 4)
The name given to the distance from the centre of a polygon or circle to one of the vertices is radius.

Shapes (Year 4)

Shapes are all around us — from the triangles on road signs to the circles in wheels. Learning about them helps us understand space, design, and everyday objects.

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Fascinating Fact:

Cones make life tasty and safe such as ice cream cones for eating and traffic cones for road safety.

In KS2 Maths, pupils explore 2D and 3D shapes by learning their names, properties, and uses. Understanding edges, faces, and vertices helps children recognise patterns in the world around them and solve geometry-based problems with confidence.

  • Edge: The line where two faces of a 3D shape meet.
  • Vertex: A point where two or more edges meet.
  • Face: A flat or curved surface on a 3D object.
What are the main 3D shapes taught in KS2 Maths?

The main 3D shapes include cubes, cuboids, spheres, cones, cylinders, and pyramids. Pupils learn how to count their faces, edges, and vertices.

What is the difference between 2D and 3D shapes?

2D shapes are flat, like circles and squares, while 3D shapes have depth, such as spheres and cubes, and can be held or seen from different angles.

How do children learn about shapes in Year 4 Maths?

In Year 4 Maths, children use shape sorting, measuring, and drawing activities to identify and describe properties of shapes, building spatial reasoning skills.

1 .
Which of these describes an isosceles triangle?
Triangle with 3 equal sides
Triangle with 2 equal sides and 2 equal angles
Triangle with 3 equal sides and 2 equal angles
Triangle with 2 equal sides and 3 equal angles
An isosceles triangle has 2 equal angles which are opposite to 2 sides of equal length
2 .
How many degrees in a right angle?
60o
90o
180o
360o
There are 360o in a full turn so a quarter turn will be 90o
3 .
What is the name of the triangle with all sides and all angles equal?
Right angled triangle
Isosceles triangle
Equilateral triangle
Pyramid
An equilateral triangle has angles of 60o at each of its corners
4 .
What is the name given to the distance from the centre of a polygon or circle to one of the vertices?
Circumference
Diameter
Radius
Tangent
The diameter is twice the radius
5 .
How many sides does an octagon have?
5
6
7
8
To help remember this, think of an octopus with 8 legs
6 .
What is a polyhedron?
A 3D shape where all faces are square
A 3D shape where all faces are flat polygons
A 2D shape where all angles are different
A 2D shape with twelve sides
Cubes and cuboids are both polyhedrons
7 .
What is a seven sided polygon called?
Heptagon
Hexagon
Pentagon
Tetrahedron
A heptagon has 7 sides and a heptagram is a star with 7 points
8 .
What is the name of all flat shapes with three or more straight sides?
Triangle
Polyhedron
Polygon
Heptagon
So triangles, squares, rectangles and pentagons are all polygons
9 .
What is the name given to a shape that has four faces all of which are equilateral triangles?
Tetrahedron
Polyhedron
Prism
Pyramid
Tetrahedrons are similar to pyramids, but pyramids have 5 faces, one of which is a square
10 .
Which of these is a regular polygon?
Rectangle
Right angled triangle
Square
Circle
A regular polygon has all sides equal
You can find more about this topic by visiting BBC Bitesize - Recognise and describe 3D shapes

Author:  Amanda Swift (Primary School Teacher & Educational Content Developer)

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