plane
400
Points and lines on the same plane are coplanar.
There are 91 lines.
In a plane, only one.
plane
36
Yes- planes contain infinitely many points and every pair of points in plane determine a line in that plane, so every plane contains infinitely many lines.
infinite number of lines
Lines in the same plane that do not intersect Lines in the same plane that do not intersect Lines in the same plane that do not intersect Lines in the same plane that do not intersect
20 regions
It has 2 lines of sym
400
Either 0 or 1 plane(s).
Points and lines on the same plane are coplanar.
All non-parallel lines in a plane will intersect at some point in the plane.
3 lines and one plane