A regular octogon has 8 lines of symmetry.
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An irregular octagon can have 0, 2 or 4.
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A regular octagon has 8 lines of symmetry.
There are eight lines of symmetry.
This is a octagonA octagon has 8 sides and 8 corners.1 face and 8 lines of symmetry.* * * * *An octagon need not have any lines of symmetry.
If your asking what shape has three lines of symmetry, your answer would be an equilateral triangle. You can tell how many lines of symmetry a shape that has all angles of the same measure has by looking at it's angles. Ex., pentagon has five angles--five lines of symmetry; octagon has eight angles, eight lines of symmetry; etc.
They may have no lines of symmetry or they may have some - it all depends upon the shape of the irregular octagon. Only regular octagons have 8 lines of symmetry.