a diagonal of a polygon is an segment between two non - adjacent vertices of the polygon. how many diagonals does a regular 10 - sided polygon have?
Choose the most appropriate option:	A) 875	B) 35	C) 1425	D) 2025	E) 2500
<gadget id="calculator">10 - 3</gadget>
<output>7</output>

<gadget id="calculator">7 * 10</gadget>
<output>70</output>

<gadget id="calculator">70 / 2</gadget>
<output>35</output>

<result>B</result>
a diagonal of a polygon is an segment between two non - adjacent vertices of the polygon. how many diagonals does a regular 10 - sided polygon have?
divide(multiply(subtract(10, const_3), 10), const_2)
"there ' s a direct formula for this . number of diagonals in a regular polygon = [ n * ( n - 3 ) ] / 2 , n = number of sides of the regular polygon . here , n = 10 . plugging it in , we get 35 diagonals ! answer ( b ) ."