Postulates

2.5 - If two points lie in a plane, then the entire line containing those points lies in that plane.

Points A and B lie in plane K and line m contains points A and B, so line m is in plane K.

2.3 - A line contains at least two points

Line n contains points P, Q and R

2.1 - Through any two points, there is exactly one line

Line n is the only line through points P and R

2.6 - If two lines intersect, then their intersection is exactly one point.

Lines s and t intersect at point P.

2.4 - A plane contains at least three noncollinear points

Plane K contains noncollinear points L,B,C and E

2.7 - If two planes intersect, then their intersection is a line.

Planes F and G intersect in line w.

2.2 - Through any three noncollinear points, there is exactly one plane.

Plane P is the only plane through non collinear points A,B,C