No it is a shape, but the shape has symmetry.
two
Yes. An ellipse (oval) has two lines of symmetry, but not a rotational symmetry. A parabola has one line and no rotation.
Rotational symmetry counts how many times a shape will fit onto itself when it is rotated 360°. When an oval (I assume you mean an ellipse) is rotated it will fit onto itself after 180°, thus it has rotational symmetry (of order 2).
No.It is regular because it has at least one line of symmetry
circle,rectangle,square,oval,octogon,hexagon
two
2
two
Koalas have bilateral symmetry, as all vertebrates do.
2 lines
I think it has 2
2
Yes. An ellipse (oval) has two lines of symmetry, but not a rotational symmetry. A parabola has one line and no rotation.
Rotational symmetry counts how many times a shape will fit onto itself when it is rotated 360°. When an oval (I assume you mean an ellipse) is rotated it will fit onto itself after 180°, thus it has rotational symmetry (of order 2).
No, eggs are ovals. An ellipse has two axes of symmetry; an egg has one axis of symmetry. An ellipse is a special case of an oval. The word oval actually comes from the Latin for egg (ovum) Technically speaking, although the egg is oval in two dimensions, it is a 3D object, and is thus called an ovoid; an ovoid is an oval in three dimensions
Are you referring to the Marquise Cut in Diamond jewelry? This is in the shape of a pointed oval; it would two-fold rotational symmetry.
A triangle, an oval, a trapezoid as well I think.