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MBA (IT), PHD
Kaplan University
Apr-2009 - Mar-2014
Professor
University of Santo Tomas
Aug-2006 - Present
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We need to be able to calculate this, without having to consider the size of the exterior and interior angles of all the different polygons.
Let the size of an exterior angle be x°
The size of the interior angle is therefore 5x°
An exterior and interior angle are supplementary angles.
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x°+5x°=180°⇒6x=180°
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x=30°
This is size of each exterior angle (extâˆ
)
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The sum of the exterior angles is 360°
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Number of sides (or angles) = 360extâˆ
36030=12 sides
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