Anyone else about to fail a grade because of online school?

Statement: if two points are given, then exactly one line can be drawn through those two points. which geometry term does the statement represent? defined term postulate theorem undefined term

{0,1,2,3,4,5,6,20,21,22,23,24,25} the distribution is considered to be: skewed the right, skewed the left, not skewed?

How many sides does a regular polygon have if each exterior angle measure is 45 degrees explain your answer, i really don't understand this.