Hi Stacia, Welcome to Fish Lore
Baby plecos, how cute!
I'm not knowledgable on angels or plecos but for others to help you, we'll need to know what size your tank is, is it cycled? What are your water parameters?
What kind of plecos?
I don't know if the parents will eat the babies but I'm pretty sure the angels will.
Until someone who knows more comes along to answer your question, I can suggest a couple of things, either make sure they have plenty of hiding places or move them to another tank. If you have one of those little breeder boxes that sits in the tank, you can put them in there.
Good luck to you and your fish, post some pics if you get the chance. We love them!