Mercury.
There are two planets with an almost perfectly spherical shape. They are Mercury and Venus.
No planet's orbit is perfectly circular. They are all elipses.
Of the planets in our solar system, Venus has the smallest eccentricity.
Saturn is not perfectly round due to its rapid rotation, which causes it to bulge at the equator. This shape, known as an oblate spheroid, results from the centrifugal force generated by its fast spinning motion. Additionally, the planet's gaseous composition allows it to deform more easily than a solid body, contributing to its slightly flattened poles and wider equator.
it is perfectly round.
yes
Yes
Mercury.
yes
pooey in the looey
Is a circle.
A sphere.
A circle or a sphere
yes
Nobody's head is perfectly round. It is a free-form shape. Everybody's is a different shape.
A perfectly round stainless steel ball, a number of which in a round casing are a 'bearing'.