If x represents the sum of the interior angles of a triangle and y represents the sum of the interior angles of a regular pentagon, then the difference between x and y is equal to the sum of the interior angles of what geometric shape? Select.
A) Circle	B) Square	C) Rhombus	D) Trapezoid	E) Pentagon
Sum of angles of triangle = 180*(3-2)= 
<gadget id="calculator">180*(3-2)</gadget>
<output>180</output>
180=&gt; using formula sum of interior angles of polygon = 180*(n-2) where n is the number of sides in a polygon   Sum of angles in Pentagon = 180*(5-2)= 
<gadget id="calculator">180*(5-2)</gadget>
<output>540</output>
540   Difference=540 - 180= 
<gadget id="calculator">540 - 180</gadget>
<output>360</output>
360=&gt; Cirlcle   hence (Circle).
<result>A</result>
If x represents the sum of the interior angles of a triangle and y represents the sum of the interior angles of a regular pentagon, then the difference between x and y is equal to the sum of the interior angles of what geometric shape?