a line. Note, to be a polygon, the minimum number of sides is 3. In topology, you can have a '1-sided' object, which is called a Moebius strip.
the answer is note extension. No, its called a note Duration.
No, it is usually right after the bar line. The note right after the bar line is the first note of the measure, which usually receives the most emphasis.
The amount written on the face of a promissory note is called face value or principal. The date on which the promissory note is written is called the issue date.
The croquet start line is called a baulk line.
It is called the Death Note. Or rather, the Sixty-Fourth Note. Or, perhaps you mean the Foot Note?
a "ledger" line
Downward.
The line hanging from a note is called a stem. The variations in the stems help tell how long/ short a note is.
The note for the first bar line is G and theres a way to remember the notes on the bar line like Good Boys Do Fine Always
It's a legato mark. It indicates that the note should be held for as long as possible before playing the next note following it.
A beam or curved line connecting two notes is called a "tie". The duration of that note then is equal both note values.
Line notes or notes that you see on the staff lines where the line goes right through the note. Any other note can precede or follow a line note, for instance a quarter or half note.
line note
If they are NOT connected, then I think they are called "Voices", or voce (voh-chay).
It's called a dotted minum
In your terminology it would be a "line note". The " line note" that comes directly before or after the "space note" is said to be a "step" away from the "space note".