How many diagonals does a polygon with 23 sides have, if one of its vertices does not connect to any diagonal? Answers:
A) 201	B) 159	C) 179	D) 189	E) 209
If I calculate it using the formulae, #diagonals = n (n-3)/2209ach vertex sends of n-3 diagonals   n= 23-1 then 22*(22-3)/2= 
<gadget id="calculator">22*(22-3)/2</gadget>
<output>209</output>
209   Correct Option:209
<result>E</result>
How many diagonals does a polygon with 23 sides have, if one of its vertices does not connect to any diagonal?