Sorry if I am asking for too many explanations...
11.
[diagram: x and y axis. with point A at (0,2) and point B at (2,0) with a line connecting the two]
In the figure above line L (not shown) is perpendicular to segment AB and bisects segment AB. which of the following points lie on line L.
A. 0,2
B. 1,3
C. 3,1
D. 3,3
E. 3,6
I got A just by eyeballing it, but it there a mathematical explanation for it?
22.
Um... I don't know how to draw the figure, but if you have the test and can explain it, please do
23.
Three lines are drawn in a plane so that there are exactly three different intersection points. Into how many nonoverlapping regions do these lines divide the plane?