Any polygon with 3n sides (n > 1) where every nth side is equal and every nth angle is equal: that is the sides and angles repeat in sets of n.
For example a hexagon (n = 2) with
sides of length x,y,x,y,x,y
and
angles of P,Q,P,Q,P,Q.
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Scalene triangle * * * * * A scalene triangle does not have rotational symmetry of order 3. The triskelion (the three legs) on the Isle of Man flag, or a simplified version of that shape will meet the requirements.
An equilateral triangle has rotational symmetry (order 3).
3- If an equilateral triangle has 3 equal sides, it also has 3 orders of rotational symmetry.
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