The Formula $D = \frac { n ( n - 3 ) } { 2 }$

question 173

Short Answer

The formula $D = \frac { n ( n - 3 ) } { 2 }$ yields the number of diagonals, D , in a polygon of n sides. Find the number of sides of a polygon that has 90 diagonals. __________ sides

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Definitions:

Free Labor Flows

The unrestricted movement of laborers across regions or countries, allowing workers to seek employment where they choose without barriers.