in octagon the possible diagonals are?

• number of diagonals= nc2-n
  8c2-8=20
• 9 years agoHelpfull: Yes(20) No(1)
• for any polygon
  no of diagonal=n(n-3)/2,where n=no of sides
  here n=8
  so diagonals=8(8-5)/2
  =20 ans
• 9 years agoHelpfull: Yes(17) No(6)
• No. of diagonal in n sided polygon is n(n-3)/2.
  since it is octagon
  hence
  8(8-3)/2
  8*5/2=20
• 9 years agoHelpfull: Yes(6) No(0)
• The formula is:nC2-n.
  So,the answer is:8c2-8=20
• 9 years agoHelpfull: Yes(2) No(2)
• answer is 20...because to find diagonal
  formula is N*(n-3)/2
  
  that is here n=8 because octagon
  
  8*(8-3)/2 = 20
  
  
  
• 9 years agoHelpfull: Yes(1) No(0)