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- 11

## Homework Statement

I only get one chance at getting these ALL right... Nazi teacher :P lol

1. Two planes parallel to a third plane are parallel.

True, planes take up a lot of space so this seems reasonable :P

2. Two lines either intersect or are parallel.

False, there is a lot of space for both of them i think

3. Two planes perpendicular to a third plane are parallel.

True Normal vectors perpendicular to a plane are parallel so I suspect this to be true

4. Two planes perpendicular to a line are parallel.

True, in my head i'm picturing a line on the xy axis. all the planes coming off of it are parallel.

5. A plane and a line either intersect or are parallel.

False, i'm imaging a line that is bound to the xy axis and a plane going past it without touching it.

6. Two lines perpendicular to a plane are parallel

True, picturing this in my head I believe they would have to be

7. Two planes either intersect or are parallel.

True, Planes are big and if they don't cross they must be parallel

8. Two lines parallel to a third line are parallel.

True, (a lot of my answers are true >.<) in my head it seems like they would have to be.... i hope these explanations aren't too vague lol

9. Two lines perpendicular to a third line are parallel.

TRUE!! they would be shooting off at the same direction...

10. Two planes parallel to a line are parallel.

idk... i want to say true again but i doubt all these are true

11. Two lines parallel to a plane are parallel.

False, I picture in my head a plane and then a line parallel to it on the xy axis and one on the zy axis