Solved

Solve
-The Equation D=12n(n−3)D = \frac { 1 } { 2 } n ( n - 3 )

Question 132

Multiple Choice

Solve.
-The equation D=12n(n−3) D = \frac { 1 } { 2 } n ( n - 3 ) gives the number of diagonals DD for a polygon with nn sides. Find the number of sides n\mathrm { n } for a polygon that has 54 diagonals.


A) 9 sides
B) 12 sides
C) 3 sides
D) 13 sides

Correct Answer:

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