Question

Find the sum of interior angles of a polygon of given number of sides

by using formula (n-2) x 180º.

i. 10 sides

ii. 7 sides
(with step by step formula)​

Answer 1

(n-2)×180°

1.(10-2)×180°

= 8×180°

=1440°

2.(7-2)×180°

=5×180°

=900°

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