Answer:
Step-by-step explanation:
1) Two planes parallel to a third plane are parallel - True
2) Two lines parallel to a plane are parallel - False
3) Two lines orthogonal to a third line are parallel - False
4) Two lines parallel to a third line are parallel - True
5) Two planes parallel to a line are parallel - False
6) Two lines orthogonal to a plane are parallel - True
7) Two lines either intersect or are parallel - False
8) Two planes either intersect or are parallel - True
9) Two planes orthogonal to a line are parallel - True
10) A plane and a line either intersect or are parallel - True
11) Two planes orthogonal to a third plane are parallel - False