A rectangle is a possible candidate, as is an ellipse.
yes
I would think it would have two. One horizontal and one vertical.
The rectangle's rotational symmetry is of order 2. A square's rotational symmetry is of order 4; the triangle has a symmetry of order 3. Rotational symmetry is the number of times a figure can be rotated and still look the same as the original figure.
A nonrectangular parallelogram has rotational symmetry, but not line symmetry. Additionally, shapes such as the letters S, N, and Z can be rotated to show rotational symmetry, although they do not have line symmetry.
a circle or a sphere
A figure has rotational symmetry if you can turn it about a figure.
A sphere has rotational symmetry of an infinite degree.
yes
yes
I would think it would have two. One horizontal and one vertical.
Square, hexagon, octagon, rectangle, bowtie-shaped figure, etc.
The rectangle's rotational symmetry is of order 2. A square's rotational symmetry is of order 4; the triangle has a symmetry of order 3. Rotational symmetry is the number of times a figure can be rotated and still look the same as the original figure.
A nonrectangular parallelogram has rotational symmetry, but not line symmetry. Additionally, shapes such as the letters S, N, and Z can be rotated to show rotational symmetry, although they do not have line symmetry.
Yes. An ellipse (oval) has two lines of symmetry, but not a rotational symmetry. A parabola has one line and no rotation.
a circle or a sphere
z
a right triangle