[问答题]
Consider the following sequence of fi c h 4l5r;vglh(ywavr:k) rlr.k mz962gpvlqit.l q b)) mou59gd o4e+8ures.
Figure 1 contains 6 line segments.
1. Given that Figure n contains 101 line segments, show that n=20 .
2. Find the total number of line segments in the first 20 figures. __
