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  1. Chapter 3 Class 8 Understanding Quadrilaterals
  2. Serial order wise
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Example 2 Find the number of sides of a regular polygon whose each exterior angle has a measure of 45°. Given that Exterior angle = 45° Let number of sides = n In a regular Polygon Sum of the exterior angles = 360° Exterior Angle × Number of sides = 360° 45° × n = 360° n = 360"°" /45"°" n = 8 ∴ Polygon has 8 Sides.

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Davneet Singh
Davneet Singh is a graduate from Indian Institute of Technology, Kanpur. He has been teaching from the past 8 years. He provides courses for Maths and Science at Teachoo. You can check his NCERT Solutions from Class 6 to 12.