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Find the Sum of the Interior Angles of a Polygon Of: 7 Sides - Mathematics

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Question

Find the sum of the interior angles of a polygon of: 7 sides

Sum
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Solution

When n = 7
∴ Sum of interior angles
= (n - 2) x 180°
= (7 - 2) x 180°
= 5 x 180°
= 900°.

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Chapter 18: Rectilinear Figures - Exercise 18.1

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Frank Mathematics [English] Class 9 ICSE
Chapter 18 Rectilinear Figures
Exercise 18.1 | Q 1.1
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