What is the grammatical term for sentences like:
Do you know where he lives?"
I can’t imagine how he did it."
In those sentences we use what is essentially an interrogative sentence (bolded), but we do not use inversion. We can't say, "Do you know where does he live?"
Now I want to know the correct way of referring to such constructions. I read somewhere "double interrogative sentence" or similar, but I'm not sure.