What is the cross section of a cone horizontally?

Answer 1

The cross section of a cone horizontally can be various shapes depending on the height at which the cross section is taken.

If the horizontal cross section is taken near the base of the cone, it will result in a larger circular shape, similar to a full circle.

As the horizontal cross section is taken higher up the cone, closer to the apex, the resulting shape will be smaller and more elliptical in nature.

Ultimately, the shape of the horizontal cross section of a cone will become a point when the cross section is taken exactly at the apex.