1) How many planes are shown in the figure?
answer: 5
2) Which of the following points are collinear?
answer: A,H,B
3) which of the following is a segment line?
answer: EF
4) Name the intersection of the planes ACE and CDFE
answer: CE
5) Name the two planes that intersect at BD.
Answer: FBD and ABCD
6) plane A, B,J,E are coplanar
Answer: false.
Which of the following is the correct way to name this line?
⇔
Answer: BC
