Calculate the measure of 1 exterior angle of a regular pentagon? Show Answer Problem 9 What is the measure of 1 exterior angle of a regular decagon (10 sided polygon)? Show Answer Problem 10 What is the measure of 1 exterior angle of a regular dodecagon (12 sided polygon)? Show Answer ...
ShapeSum of Interior AnglesInterior Angle of Regular Polygon Triangle 180° 60° Quadrilateral 360° 90° Pentagon 540° 108° Hexagon 720° 120° Heptagon 900° 128.57° Octagon 1080° 135° Nonagon 1260° 140° Decagon 1440° 144° Dodecagon 1800° 150° What Is a Polygon? A polygon is ...
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Previously we identified the number of sides in a polygon by taking the sum of the angles and using the S=(x-2)*180 formula to solve. But, this time we only know the measure of each interior angle. We'd have to multiply by the number of angles to find the sum... but the whole...