हिंदी

The sum of the interior angles of a regular polygon is equal to six times the sum of its exterior angles. The number of sides of the polygon is ______.

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प्रश्न

The sum of the interior angles of a regular polygon is equal to six times the sum of its exterior angles. The number of sides of the polygon is ______.

विकल्प

  • 14

  • 10

  • 12

  • 16

MCQ
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उत्तर

The sum of the interior angles of a regular polygon is equal to six times the sum of its exterior angles. The number of sides of the polygon is 12.

Explanation:

The sum of the interior angles of an n-sided polygon is (n − 2) × 180°, and the sum of its exterior angles is always 360°. Setting the interior angle sum equal to six times the exterior angle sum gives (n − 2) × 180° = 6 × 360°, which simplifies to n − 2 = 12, resulting in n = 12.
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अध्याय 13: Rectilinear Figures [Quadrilaterals: Parallelogram, Rectangle, Rhombus, Square and Trapezium] - Exercise 13 (A) [पृष्ठ १९१]

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सेलिना Concise Mathematics [English] Class 9 ICSE
अध्याय 13 Rectilinear Figures [Quadrilaterals: Parallelogram, Rectangle, Rhombus, Square and Trapezium]
Exercise 13 (A) | Q 1. (d) | पृष्ठ १९१
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