If you look down from the top, it is circular. From the bottom, it is circular. From the side, it is a triangle.

A cylinder would fit the given description because it has two flat circular faces each side of a circular body.

A cylinder, cone or half of a sphere

you call it a edge

There are only three spacial terms and they are: length, width, and depth.

An octagon.

Pentagon

The answer is Tetradeecagon.

A hexagon

An octagon

A nine sided shape is called a nonagon.

That's a septagon.

it is called a trecagon

Stadiums are circular in shape because in a circle the radii / radius is the same . So , whichever side you are sitting , you can enjoy the sport . In football and other team sports , it can be a square or a rectangle . It is because we have people supporting a particular team . So , they sit the opposite side of the opponent .

A right circular cone could probably do that.

The magnetic field lines around the current carrying conductor will be a circular. i.e they originate from one side and returns back to the other side forming circular path.

Circular diameter is the distance from side to side of a circle through the middle.

No not just any shape that has 8 side can be called an octagon. An octagon has straight lines that make up a closed bounded shape.

A diameter is the straight line from one side of a circular shape, through the centre, to the other side. Its length can be 100 centimetres, or more or less.

It is a shape that is like a toothpaste tube which has a circular lid which is the same size as the tube below it.

Its 4th side would have to be circular in order to comply with the given requirements.

a circle

A track is a circular ring on one side of the disk.

A semicircle is one shape fitting this description.

A shape cannot have only one side because it would not be closed. A shape must have at least three sides to be a closed figure (no "gaps")