Answer:
110⁰
Step-by-step explanation:
The sum of the interior angles of a polygon is given by:
(n-2)*(180⁰), where n is the number of sides.
For this diagram, n = 7
(7-2)*(180⁰) = 900⁰
Sum of the 6 marked angles = 790⁰
Angle x = 900⁰ - 790⁰ = 110⁰
