Point
triangle!
a cone that does not have a tip
Point
A sphere perhaps
a point, dot, hole, vagina you can use any of those 4
Point
A point
triangle!
a cone that does not have a tip
Point
A sphere perhaps
The geometric term for the tip of a pen is a "point." In geometry, a point is a location in space that has no size or dimensions, represented by a dot. It is the most fundamental element in geometry and serves as the building block for all geometric shapes and figures.
The English word for chopsticks is chopsticks.
I have no idea ask you
plane
a plane
This could vary depending on the pen, but it would most likely be a right, circular cone, frequently with the tip removed.