I was fooled a couple of times with backpage and dont want to get fooled again.  Is there a way to check if the pictures being posted are legit or if they were taken from somewhere else?

you have been fooled by the fake pics.
The good news is you found TER so your days of being fooled are over
There are many ladies here who use their own pics.Check the vegas ad board here.
There are a few sites you can check to see if pictures are real.
Try google images.
Copy and paste the link of the picture in the box and search.
It will show where the pictures are being used online.
Also another site is tineye.com to check pictures.

Most photos are tagged you can see where they pop up at and of course reading reviews help too.

Apparently your first post on this board, no reviews and you're perusing backpage!   You get a mulligan.....now go re-tee it up by perusing the LV Ad board and the LV database of providers.   It's not that complicated; but I'd advise staying away from Backpage, at least for the LV market.

Kudos to you mr monster / yes it's amazing to me the pics and ( fake pics of girls profile ) on backpage / look for the girls on backpage that sat TER and P411 verified as there are a few good legit girls on backpage  
But I'd stick to TER and P411 sites - happy hobbling and good luck / tons of awesome girls in the Vegas marke

Stay away from backpage. It's reputation isn't that great and, when you have more legitimate sites such as TER and p411.

any photo can be faked under the hands of a 'good "shopper"'.