a) Lines DC and AC are distinct lines that intersect.
b) Another name for plane X is: plane BDE.
c) E and F are distinct points that are collinear.
d) D, E, F and G are distinct points that are coplanar.
How to Interpret the Planar points?
a) From the given plane, if we suppose that line AD is drawn on the figure, then it means that Lines DC and AC intersect at point C and as such they are distinct lines.
b) We see that the plane X can also be named as plane BDE.
c) We see that E and F are distinct points that are collinear.
d) We see that points D, E, F and G are distinct points that are coplanar.