No. Circular lakes are actually rare. Lakes typically follow the contours of the low lands in which the form.
The only shape that's like a circle is another circle.
The shape that has no vertices and is round is a circle. The circle is the only shape that does not have vertices.
None. The only shape with a diameter is the circle.
a circle?
circle
A circle
a circle ??
a circle
A circle or a sphere.
A circle.
A circle perhaps or maybe a cone
a circle.