READING DIAGRAMS In Exercises 17—22, use the diagram at the right. 17. Name the intersection Of and m.
18. Name the intersection Of plane EFG and plane PGS.
19. Name the intersection Of plane PQS and plane HGS.
Are points P, Q, and F collinear? Are they coplanar?
20.
Are points P and G collinear? Are they coplanar?
21.
22. Name three planes that intersect at point E.
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