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The Oct- prefix means 8, so an octagon has 8 sides and 8 angles A regular octagon has 8 liens of symmetry; irregular octagons can have 0, 1, 2 or 4 lines of symmetry
4 line of symmetry
4 corners 4 angles Angles add up to 90' All angles are right angles Has 4 lines of symmetry
A kite has 1 line of symmetry and a square has 4 lines of symmetry and so there are 5 lines of symmetry altogether.
a square