Given: quadrilateral ABCD with A(5,1), B(0,3), C(-2,5) and D(3,3)
Show: ABCD is a parallelogram
using midpoints

The line plot below represents the number of letters written to overseas pen pals by the students at the waverly middle school.each x represents 10 students. how many students wrote more than 6 and fewer than 20 letters. a.250 b.240 c.230 d.220