line symmetry year 4. a shape has line symmetry if… you can draw a line through it so that one...

Line Symmetry Year 4

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Line Symmetry

Year 4

A shape has line symmetry if…

You can draw a line through it so that one part is exactly the same as the other part.

These shapes have one line of symmetry

Page 4: Line Symmetry Year 4. A shape has line symmetry if… You can draw a line through it so that one part is exactly the same as the other part

These shapes have two lines of symmetry

Page 5: Line Symmetry Year 4. A shape has line symmetry if… You can draw a line through it so that one part is exactly the same as the other part

Some shapes have more than 2 lines of symmetry

How many lines of symmetry has a square got?

Page 6: Line Symmetry Year 4. A shape has line symmetry if… You can draw a line through it so that one part is exactly the same as the other part

Watch!

A square has 4 lines of symmetry

Page 7: Line Symmetry Year 4. A shape has line symmetry if… You can draw a line through it so that one part is exactly the same as the other part

How many lines of symmetry does this shape have?

More than 2

Page 8: Line Symmetry Year 4. A shape has line symmetry if… You can draw a line through it so that one part is exactly the same as the other part

Watch!This shape has 1 line of symmetry

Page 9: Line Symmetry Year 4. A shape has line symmetry if… You can draw a line through it so that one part is exactly the same as the other part

Page 10: Line Symmetry Year 4. A shape has line symmetry if… You can draw a line through it so that one part is exactly the same as the other part

But how many lines of symmetry does this shape have?

More than 2

Page 11: Line Symmetry Year 4. A shape has line symmetry if… You can draw a line through it so that one part is exactly the same as the other part

Watch!This shape has 2 lines of symmetry

Page 12: Line Symmetry Year 4. A shape has line symmetry if… You can draw a line through it so that one part is exactly the same as the other part

Page 13: Line Symmetry Year 4. A shape has line symmetry if… You can draw a line through it so that one part is exactly the same as the other part

How many lines of symmetry does this shape have?

More than 2

Page 14: Line Symmetry Year 4. A shape has line symmetry if… You can draw a line through it so that one part is exactly the same as the other part

Watch!This shape has 3 lines of symmetry

Page 15: Line Symmetry Year 4. A shape has line symmetry if… You can draw a line through it so that one part is exactly the same as the other part

Page 16: Line Symmetry Year 4. A shape has line symmetry if… You can draw a line through it so that one part is exactly the same as the other part

But how many lines of symmetry does this shape have?

More than 2

Page 17: Line Symmetry Year 4. A shape has line symmetry if… You can draw a line through it so that one part is exactly the same as the other part

Watch!This shape has only 2 lines of symmetry

Page 18: Line Symmetry Year 4. A shape has line symmetry if… You can draw a line through it so that one part is exactly the same as the other part

Page 19: Line Symmetry Year 4. A shape has line symmetry if… You can draw a line through it so that one part is exactly the same as the other part

What happens when…

…you join two shapes together?

Investigate.

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