WORKED OUT EXAMPLE
Q
How many line segments are there, in all, in the star ?
Sol:
30 line segments are there in the star.
For convenience, we categorize into four groups as:
- BK, KS, ST, TQ, QB - 5 line segments
- AT, TL, LK, KH, HQ, QM, MS, SD, DB, BA - 10 line segments
- AL, LH, HM, MD, DA - 5 line segments
- TD, TH, KA, KM, QL, QD, SH, SA, BM, BL - 10 line segments
So in all, there are 30 line segments!
Did you figure it out correctly ?