Question 52592
(1/4y2-1/4y2)/(1/4x2-1/4x1) end of segment #1 & begining of segment #2
(1/2y2-1/2y1)/(1/2x2-1/2x1) mid point
(3/4y2-3/4y1)/(3/4x2-3/4x1) end of segment #3 & begining of segment #4