New paragraph to be inserted where there isn't one currently.
It wasn't an English man but it was a Welsh mathematician by the name of Robert Recorde who in 1557 invented the equality symbol and it has 2 equal parallel lines
If you mean the symbol &, it is called an ampersand.
latitude lines is another name for parallels and longitude lines are called meridians
a quadrilateral sideways, a pentagon looks like a crown.
about three lines
Ellipsis
See http://en.wikipedia.org/wiki/Dagger_(typography)
Ellipsis
the words and, but, or, are called conjunctions.
the words and, but, or, are called conjunctions.
up known
It's a prepositional phrase.
Addition sign or plus signAlthough, the original question worded as "What_is_two_lines_cross_at_90_degrees," could be interpreted to be asking about perpendicular lines.
Adjectival phrase
If by movement you mean tilting it is called roll. There is no name for a boat simply moving sideways.
The movie Sideways was based on a novel of the same name by Rex Pickett. It is a 2004 novel.
The " symbol is called a quotation mark.