Question

Find the unknown angle A and B

Answer 1

Answer:

a = 130°

Step-by-step explanation:

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Answer 2

Step-by-step explanation:

Given that,

<B=130°,<B=120°,<D=162°,<E=140°,

<F=96° & <G=115°

Find: <A=?

No.of sides of the polygon = n =7

☆Sum of interior angle of a polygon = 180°(n-2)

:. It is a heptagon & whose sum of angle = 900°

So,Value of angle A = 900-(Sum of other angle)

= 900-(130°+120°+162°+140°+96°+115°)

=900-763=137° (Ans)

Hope dis is helpful for u.....