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Shapes (Year 5)
A pentagon is not a quadrilateral.

Shapes (Year 5)

Shapes aren’t just for maths lessons – they build our world! From tiles to towers, learning about shapes helps you spot geometry in art, design, and engineering.

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Fascinating Fact:

Domes use curved shapes to make buildings strong and beautiful such as the one on St Paul’s Cathedral.

In KS2 Maths, pupils explore 2D and 3D shapes by recognising their features and patterns. They learn how to calculate angles, identify symmetry, and understand how geometry applies in real life—from architecture to everyday objects.

  • Angle: The space between two lines that meet at a point, measured in degrees.
  • Symmetry: When one half of a shape matches the other half exactly when folded or reflected.
  • Polygon: A flat, closed shape made up of straight sides, like triangles or hexagons.
What are regular and irregular shapes in KS2 Maths?

Regular shapes have sides and angles that are all equal, like a square. Irregular shapes have sides and angles of different lengths and sizes.

How is geometry used in real life?

Geometry is used in building design, art, transport, and even sports. It helps us measure space, plan structures, and create balanced, strong designs.

What do Year 5 pupils learn about shapes?

Year 5 pupils learn about 2D and 3D shapes, angles, lines of symmetry, and how to describe and classify shapes based on their properties.

1 .
Which of these shapes is not a quadrilateral?
Oblong
Rectangle
Pentagon
Square
Pentagons have 5 sides - all the other shapes have just 4
2 .
If you cut a triangular prism in half, what shape would the new face be?
Circle
Triangle
Square
Hexagon
If you cut a triangle into two with a straight line, at least one of the two pieces will be a triange
3 .
What is the name given to a triangle with an angle larger than 90o?
Isosceles
Equilateral
Scalene
Obtuse
Do you remember that angles between 90o and 180o are called obtuse angles?
4 .
What is a triangle with no equal sides and no equal angles called?
Isosceles
Equilateral
Scalene
Right angled
Scalene comes from the Greek word for "unequal"
5 .
What is an octahedron?
3D shape with octagon faces
3D shape with 8 faces
2D shape with 8 sides
2D shape with 8 angles
Remember that 'octa' means 8 and that 'hedron' means a 3D shape
6 .
What is the shape of the faces of a regular octahedron?
Square
Octagon
Hexagon
Triangle
A regular octahedron would have equilateral triangles as each of its 8 faces
7 .
What is an oblong?
A rectangle that is not a square
A rectangle that is a square
A quadrilateral that is not a square
A quadrilateral that is a square
A rectangle is a quadrilateral where all four sides are right angles
8 .
What is the name given to polygons with all the sides and angles equal?
Irregular polygons
Regular polygons
Isosceles polygons
Equilateral polygons
Irregular polygons are where the sides are not equal
9 .
How do we know if two triangles are congruent?
If they both have the same three sides
If they both have a right angle
If they both have the same size angles
If they both have two sides the same
If one shape can become identical to another by using turns, flips or slides but without changing the size, then the two shapes are congruent
10 .
What is the name given to the distance from one edge of a circle to the other through the centre?
Radius
Circumference
Tangent
Diameter
The diameter is twice the radius
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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