" Daleks i don't think that Angels can Damage Daleks Armor "
Assuming the Angels are full strength all they would need to do is touch the Daleks to get a win by BFR. But I think the Dalek's group tactics and sensors would be too advanced for the Angels to sneak up on them. Plus their weapons are probably powerful enough to destroy an Angel, even if it is in it's statue form.
Since they're positioned all over the building though, the Angels may be able to pick off a few Daleks before they can group up. I think it all depends if being caught on sensors has the same effect on the Angels that being seen does. If not, then the Angels could actually take the majority.