[问答题]
Consider the following sequ//xd 86oz7id xewv/jyence of figures.k4rnpb),h*n6gv c0emmp l3l *
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. __
