This is a series of pretty basic statements, so just hang in there.
1.) Any two points make a line. No matter where those two points are, they will always* make a line. Also, whenever you label a line, you label it with two points.
2.) When you have two intersecting lines, where they cross is exactly one point, no more, no less.
3.) Any three points that are non-col-linear make up a plane. A plane is always labeled with three points. A plane contains 3 or more points but is only labeled with three.
4.) If two points lie within a plane, then the line they form is also in the plane.
5.) If two planes intersect, they form a line at the intersection. If three insect, the intersection is a point.
If you have any questions, just ask of course!
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