SOLUTION: Anu chooses a diagonal from a regular 8 sided polygon. Anitha chooses another diagonal from the same ploygon. What is the probability that they choose 2 diagonals of the same lengt

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An 8 sided polygon is an octagon with 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:
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: or 50%. ----> see 1 above.
.
Now if it's SOLID Octagon, it's different:

see www.worselyshool.net/science/files/polygonintro
Then: = =5%, ANSWER
Thank you,
Jojo