This will be a breeze! =)
Okay, so these are what are known as undefined terms.
And what this means that these are terms that we just... Can't exactly define, but we use them everywhere! They are the basis for geometry. =)
These three terms are a point, line, and plane.
A point is just a position in space. It has no dimension and is represented as a coordinate.
A line is one dimensional, and it simply will go on forever in both directions.
A plane has two dimensions, and it has infinite length, zero width, and zero height. =)
With this information, you can answer the questions on your own! Hurray!! =))
Hopefully, this helps. =D