An umlaut.
An umlaut is just one example of a diacritical. Other diacriticals whose names are useful to learn are the tilde, circumflex, and cedilla.
Chat with our AI personalities
It is called a diersis or umlaut, depending on how it's being used.
.. n
A ray
The total number of dots on two dice - is 42.
21 each, 42 total. Unless you are asking the trick question about the two dots over the i's in "pair of dice."