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17 July 2009
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Maths

Shapes

6. Symmetry

A 2D shape is symmetrical if a line can be drawn through it so
that either side of the line looks exactly the same. The line is
called a line of symmetry.

Square

  • 4 lines of symmetry
Square

Equilateral triangle

  • 3 lines of symmetry.
Equilateral triangle

Rectangle

  • 2 lines of symmetry
Rectangle

Isosceles triangle

  • 1 line of symmetry
Isosceles triangle

Parallelogram

  • 0 lines of symmetry
Parallelogram

 

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