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## Homework Statement

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.

## Homework Equations

None.

## The Attempt at a Solution

This is what I did (i am going to write it with T/F)

a) F - they maybe skew

b) T

c) T

d) T

e) F - they maybe skew

f) T

g) F - they may intersect

h) T

i) T

j) F - Skew

k) T? - I choose true but a line can be contained in a plane. Are they different things? Or I have a problem in other answers.

Thanks in advance,

Gasim