Answer:
8 points
9 lines
5 planes
C, H, F
E, B, C
AB
{ } or ∅
D
Step-by-step explanation:
* Lets explain how to solve the problem
- The figure is 3-D
∵ The vertices are A, B, C, D, E, F, and G , H lie on two sides of it
∴ It has 8 points
∵ The lines are AB, BC, AC, AD, CF, DF, DE, BE, EF
∴ It has 9 lines
∵ The planes are the faces of it
∵ It has 5 faces
∴ It has 5 planes
∵ H lies on the side CF
∴ C, H, F are col-linear points
∵ Point E joining the sides ED, EF, EB
∴ E is co-planar point
∵ Point B joining the sides BA, BC, BE
∴ B is co-planar point
∵ Point C joining the sides CB, CH, CF
∴ C is co-planar point
∴ The co-planar points are E, B, C
∵ The planes ABC and ABE have AB as a common side
∴ The intersection of them is AB
∵ The planes BCH and DEF have no common between them
∴ There is intersection between them
∴ The intersection is { } or ∅
∵ The segments AD and DF have D as a common point
∴ The intersection of them is point D
