For a line on a coordinate plane line with point A at (1,10) and point B at (7,4): 8) What is the midpoint of the line? For a line on a coordinate plane line with point A at (7,10) and point B at (4,6): 9) How long is the line? List the four types of angles based on the size of the angle: 10) 11) 12) 13) List two types of angle pairs: 14) 15)