How many point appears in the figure?
how many lines appears in the figure?
how many planes appears in the figure?
name three collinear points?
name four coplanar points?
name the intersection of planes abc and abe?
name the intersection of planes bch and def?
name the intersection of ad and df?

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

30 miles

step-by-step explanation:

we know that 60 seconds equals 1 minute and 60 minutes 1 hour

44 ft       60 sec     60 min     158400   ft

  *   *   =

1 sec       1 min       1 hour         hour

we know that there are 5280 ft per mile

158400   ft       1 mile         30 miles

  *   =

1   hour               5280 ft     1 hour

so in 1 hour   it can travel 30 miles