No...betta fish are usually aggressive and might kill the angelfish.
You don't! What you do is get a 55 gallon tank because angelfish won't be happy in a 10 gallon tank, and then you take the betta out of the tank (it will fight with your other fish) and just get more mollies and put lots of hiding places in the tank so the babies will live.
No. Betta fish will attack each other no matter the sex.
keeping multiple bettas in the same tank is not reccomended
Male Betta splendens fight with other male Betta splendens so the answer is most other fish will not fight with a Betta in the same tank. To try to list every species of fish here would be impossible.
No a betta fish is not a social animal and can kill any fish within seconds but sometimes if placed beside each other for A month or week (depends) in separate tanks they might become friendly.
No they cannot, also if you put two Betta fish together, they will fight.
Well, the guppies might nip the angelfish's fins, which, in return, would cause the angelfish to chase and possibly eat them. The angelfish would terrorize the danios and tetras by chasing them. Quick side note: if you are planning on keeping a platy, I really wouldn't keep one! They're quite social fish, and they like to be in small groups. Basically, the angelfish will chase any small fish. The biggest problem you will encounter with this aquarium setup is the fight between the angelfish and the betta. I know from experience-I kept an angelfish and a betta together in a tank myself, and the betta ended up dying. The angelfish will nip the betta's fins, and the betta will nip the angelfish's. They will chase each other and bite a lot. My betta had fin rot and died because the angelfish had caused the fin rot to grow due to the fact that she had torn off all of his fins. I would definitely rethink this aquarium setup.
anyother fish, they only fight with each other
No, because they are fighting fish and one of them will kill the other.
no they will kill each other bettas are vicous
That will likely cause very few problems.
Most fish get along well. However, do NOT mix betta fish with other fish. Not even another betta. You have to have a permit to have to betta fish in the same tank with eachother. Betta fish are only mixed to mate. Bettas are not born in the egg. They come out as a very small fish. After the betta babies have come out, all of the fish are seperated. Even the parents, if the betta babies are left in the tank with the others the betta parents are very likely to eat the others.