PLEASE HELP which statements can be used to describe an angle?
consisting of two lines that cross
a part of a line having two end points
has a common endpoint called a vertex
two rays diverging from a common point
two lines in the same plane that do not intersect

Pls i’m too dumb to know what i’m doing right now

Average acceleration: i have no idea how to do this.

At the olympic games, many events have several rounds of competition. one of these events is the men's 100-meter backstroke. the upper dot plot shows the times (in seconds) of the top 8 finishers in the final round of the 2012 olympics. the lower dot plot shows the times of the same 8 swimmers, but in the semifinal round. which pieces of information can be gathered from these dot plots? (remember that lower swim times are faster.) choose all answers that apply: a: the swimmers had faster times on average in the final round. b: the times in the final round vary noticeably more than the times in the semifinal round. c: none of the above.