New
New
Year 2

Lines of symmetry

I can identify shapes and images that have reflective symmetry and explain where the line of symmetry lies.

New
New
Year 2

Lines of symmetry

I can identify shapes and images that have reflective symmetry and explain where the line of symmetry lies.

Lesson details

Key learning points

  1. A line of symmetry is used to show that one half of a shape is a reflection of the other half.
  2. When an image is folded along a line of symmetry, the two halves will match.

Common misconception

Children may think that any line drawn down the middle of a shape is a line of symmetry.

It is important for children to see that a line of symmetry can be folded to give two halves that match - one half is a reflection of the other half. Explore folding cut-outs of symmetrical and asymmetrical shapes to find lines of symmetry.

Keywords

  • Line of symmetry - If you were to fold a shape on its line of symmetry, both halves would match exactly.

  • Reflection - An image or shape as it would be seen in a mirror.

  • Symmetrical - When a shape has a line of symmetry, it can be described as symmetrical.

Licence

This content is © Oak National Academy Limited (2024), licensed on Open Government Licence version 3.0 except where otherwise stated. See Oak's terms & conditions (Collection 2).

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6 Questions

Q1.
Match each polygon with the number of sides and vertices that it has.
Correct Answer:triangle,3 sides and 3 vertices

3 sides and 3 vertices

Correct Answer:quadrilateral,4 sides and 4 vertices

4 sides and 4 vertices

Correct Answer:pentagon,5 sides and 5 vertices

5 sides and 5 vertices

Correct Answer:hexagon,6 sides and 6 vertices

6 sides and 6 vertices

Correct Answer:octagon,8 sides and 8 vertices

8 sides and 8 vertices

Q2.
Look at the image. These polygons are all .
An image in a quiz
hexagons
Correct answer: pentagons
octagons
Q3.
Which of these shapes is not a hexagon?
An image in a quiz
Correct answer: a
b
c
d
Q4.
An has 8 sides and 8 vertices.
pentagon
hexagon
Correct answer: octagon
Q5.
These shapes have been sorted. Which shapes do they show?
An image in a quiz
pentagons
Correct answer: triangles
Correct answer: octagons
hexagons
quadrilaterals
Q6.
Match the shapes to their properties.
An image in a quiz
Correct Answer:a,is a pentagon.

is a pentagon.

Correct Answer:b,has 8 vertices.

has 8 vertices.

Correct Answer:c,is a quadrilateral.

is a quadrilateral.

Correct Answer:d,has 3 sides.

has 3 sides.

6 Questions

Q1.
When a shape can be folded in half and both sides are the same, the line where you folded is called the line of .
Correct answer: symmetry
reflection
symmetrical
Q2.
Which of the whole shapes match the folded shape?
An image in a quiz
Correct Answer: An image in a quiz
An image in a quiz
An image in a quiz
An image in a quiz
Q3.
This shape is symmetrical. One half of the shape is a of the other side.
An image in a quiz
line of symmetry
symmetrical
Correct answer: reflection
Q4.
Which of the shapes are symmetrical?
Correct Answer: An image in a quiz
An image in a quiz
An image in a quiz
Correct Answer: An image in a quiz
An image in a quiz
Q5.
Which shape is not symmetrical?
An image in a quiz
Correct Answer: An image in a quiz
An image in a quiz
An image in a quiz
Q6.
Jun has tried to draw the reflection of this shape. Which of the reflections is correct?
An image in a quiz
An image in a quiz
Correct Answer: An image in a quiz
An image in a quiz

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