document.write( "Question 610678: how many sides are there if each interior angle has 108 degrees \n" ); document.write( "

Algebra.Com's Answer #384526 by radh(108) $\"\"$ $\"About$

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To find how many sides there are, you'd first have to know the exterior angles to the interior angles. Interior Angles + Exterior Angles always have to equal 180°. Here's a formula: $\"i%2Be=180\"$ . We know that the interior is 108, so 180-108=72. Each exterior angle is 72°. All of the exterior angles together must equal 360°. So, $\"360%2Fe=s\"$ where s equals the number of sides. 360/72=5. There are 5 sides to your polygon, so it is a pentagon. :) \n" ); document.write( "

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