Equilateral.
Rotational symmetry 2 1 as it is then the second when it is turned half way of a full turn.
bilateral and rotational symetry
It has rotational symmetry of infinite order as well as an infinite number of axes of symmetry.
a starfish has a rotational symmetry because it rotates back to itself 90 degrees which is 1/4 of a turn.
An equilateral triangle has both line symmetry and rotational symmetry. A non-equilateral isosceles triangle has line symmetry but not rotational symmetry. A scalene triangle has neither kind of symmetry.
Irregular shapes don't ever have rotational symmetry.
6
Equilateral.
Rotational symmetry 2 1 as it is then the second when it is turned half way of a full turn.
bilateral and rotational symetry
It has rotational symmetry of infinite order as well as an infinite number of axes of symmetry.
It only has rotional symmetry if it can be rotated around a point less than 360 degrees and staying the same shape like if you rotate a square 90 degrees it will be the same shape as in the beginning.. Kind of confusing
a starfish has a rotational symmetry because it rotates back to itself 90 degrees which is 1/4 of a turn.
Their early larvae have bilateral symmetry, but as they get bigger they develop fivefold symmetry. This is apparent in the regular sea urchins, that have roughly spherical bodies, with five equally sized parts radiating out from their central axes.
It has rotational symmetry of order greater than 2.
Check a biology textbook - I reckon it's lateral (left-to-right) symmetry, as the body does not have the cylindrical shape that would qualify it for radial symmetry.