The following are true of a cone:
- Its base is a circle.
- It has a single vertex, which is also called its apex.
- The lateral surface is "curved."
- A line segment can be drawn from the apex to every point on the base.
- It has one base.
- If a plane intersects the cone at any point other than the apex and is parallel to the base, the cross section is a circle that is not congruent to the base.
A cone has one base and one vertex, regardless of orientation.
TEKS: K(6)(B), 1(6)(E), 2(8)(B), 3(6)(A), 8(6)(B), 8(7)(A)