0
A seven-pointed star has seven rotational symmetries. This means it can be rotated in increments of ( \frac{360^\circ}{7} ) and still appear unchanged. Each of these rotations corresponds to one of the seven points of the star. Therefore, the total number of rotational symmetries is equal to the number of points.
What else can I help you with?
How many rotational symmetries does a ellipse have?
An ellipse has rotational symmetry of order 2.
How many rotational symmetries do decagon?
A regular decagon, which has 10 equal sides and angles, has 10 rotational symmetries. These symmetries correspond to the decagon being rotated by multiples of (36^\circ) (360° divided by 10), including the identity rotation (0°). Therefore, the decagon can be rotated to match its original position in 10 different orientations.
How many lines of rotational symmetry does a 6 pointed star have?
6
How many rotational symmetries does a semi circle have?
None, however the semicircle has one folding axis of symmetry perpendicular to the midpoint of the straight side
How many rotational symmetry for a star?
For a star shaped figure, as many as the number of points. For a real star (like the ones up in the sky) either infinitely many or none - depending on the level of detail that you look at. The surface of any star has lots of dimples and bumps caused by stellar activity and these will break up any symmetry. If you ignore these fine details, then the star is a smooth ellipsoid and has infinitely many rotational symmetries. These symmetries are along the star's axis of rotation. For any other axis, the star's rotation will make the equatorial region bulge out and so there will be no symmetries.
How many rotational symmetries does a octagon have?
It has 8 rotational symmetry.
How many rotational symmetries does a sphere has?
Infinitely many.
How many rotational symmetries does a ellipse have?
An ellipse has rotational symmetry of order 2.
How many rotational symmetries are in the letters Aand I?
2
How many rotational symmetries does a regular pentagon have?
5
How many reflection and rotational symmetries does an octagon have?
9 reflection
How many Rotational symmetries does a regular 18-gon have?
18
How many rotational symmetries does the capital letter N have?
Two.
How many symmetry lines are there in a hexagon?
A regular hexagon has 6 rotational symmetries (rotational symmetry of order six) and 6 reflective symmetries (six lines of symmetry).
How many rotational symmetries does a kite have?
A kite has only one line of rotational symmetry, as it is only the same if it is tilted once. (back to its normal position).
How many lines of rotational symmetry does a 6 pointed star have?
6
How many rotational symmetries does a semi circle have?
None, however the semicircle has one folding axis of symmetry perpendicular to the midpoint of the straight side
