Question

What is the value of x?

x =

Answer 1

hello : x = 98°

Explanation:

note :

sum of angles in polygonal is : ( n -2) × 180° ..... n : number of side

in this exercice : n = 7

sum of angles is : (7 -2 ) × 180° = 5× 180° = 900 °

x = 900° - ( 142° +110° +140° +142° +122°+146°) = 900° - 802°

x = 98°