Step-by-step explanation:
Polygon = 7 (Heptagon)
No of interior angles of polygon = (n-2)180°
(7-2)×180°
5×180°
=900°.
127°+166°+93°+76°+123°+113°+x °= 900°
810°+ x° = 900°
x °=900°-810°
x° =90°
mxb67
step-by-step explanation: