1. The problem asks to name two points collinear to point D.
Collinear points lie on the same straight line. Given the options AB and EF, if D lies on line AB, then points A and B are collinear with D.
2. The problem asks for another name for line p.
Lines can be named by any two points on them or by a single lowercase letter. Since the line is named p, another name could be the two points it passes through, for example, PQ or any two points on line p.
3. The problem asks to name the intersection of line r and plane K.
The intersection of a line and a plane is a point. Given the diagram, the intersection is point B.
4. The problem asks to name a point non-coplanar to plane K.
A point non-coplanar to a plane does not lie on that plane. Given the diagram, point W lies outside plane K, so W is non-coplanar.
5. The problem asks how many planes appear in the figure.
According to the description, there are 7 planes.
6. The problem asks to name four coplanar points.
Coplanar points lie on the same plane. Points P, S, R, and Q lie on the same plane.
7. The problem asks to name a point non-coplanar to plane Z.
Point R is non-coplanar to plane Z.
8. The problem asks to name the intersection of plane JPS and plane Z.
The intersection of two planes is a line. The intersection is line RL.
Final answers:
1. A, B
2. p or PQ
3. B
4. W
5. 7
6. P, S, R, Q
7. R
8. RL
Geometry Points Planes 63Bdca
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