Given:
The figure.
To find:
The segment bisector of MN and value of MN.
Solution:
From the given figure it is clear that ray RP,i.e.,
is the segment bisector of MN because it divides segment MN in two equal parts.
Now,


Since,
is the segment bisector of MN, therefore,



Therefore, the length of MN is
.
this sequence is decreased by 3 for every digit
so
-3n+18
One thousand three hundred fifty is one way