Determine which statements are true in 3. (Select all that apply.)
(a) Two lines parallel to a third line are parallel.
(b) Two lines perpendicular to a third line are parallel.
(c) Two planes parallel to a third plane are parallel.
(d) Two planes perpendicular to a third plane are parallel.
(e) Two lines parallel to a plane are parallel.
(f) Two lines perpendicular to a plane are parallel.
(g) Two planes parallel to a line are parallel.
(h) Two planes perpendicular to a line are parallel.
(i) Two planes either intersect or are parallel.
(j) Two lines either intersect or are parallel.
(k) A plane and a line either intersect or are parallel.
4 Answers

a, b, c, d, f, h, i, k
_

a
c
f
h
i
k
Source(s): Webassign Solutions 
Pretty sure they’re all true. Try drawing pictures to see why…

a, b, c, d, NOT e, f, NOT g, h, i, NOT j, k
Source(s): my brain, own logic 😀