The angle of rotation for a regular polygon with 7 sides isImmersive Reader
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A scalene triangle has one order of rotational symmetry.
None.
That will depend on what type of triangle it is because an equilateral triangle has 3 lines of symmetry whereas an isosceles triangle has only 1 line of symmetry but a scalene triangle has no lines of symmetry.
No
None. If you put a line anywhere in a scalene triangle, the two sides would not be symmetrical because scalene triangle has all sides and all angles different.