Question 157691
An 8 sided polygon is an octagon with {{{4}}} diagonal sides.
Remember: Probability=no. of ways it'll occur/total no. of possible outcome ------>1
So if Anu chose 1 diagonal, the probability Anitha will land on that diag. is:
{{{1/4}}} or 25% ----> see 1 above.---------> FINAL ANSWER
If Anu chose 2 sides, then the probability that Anitha will land on those sides chosen by Anu: {{{2/4=1/2}}} or 50%. ----> see 1 above.
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Now if it's SOLID Octagon, it's different:
{{{diagonals=(sides/2)(sides-3)=(8/2)(8-3)=4*5=20diag.}}}
see www.worselyshool.net/science/files/polygonintro
Then: {{{1/20}}} = {{{0.05*100}}}=5%, ANSWER

Thank you,
Jojo