Answer:
X = 138 degrees
Step-by-step explanation:
This is a seven sided figure.
The sum of the angles of a 7 sided figure is (n-2) * 180 where n is the number of sides.
(7-2)*180
5 * 180
900
We add up all the angles:
130 +129+ 130+ 122+ 130+ 121+ X =900
762+X = 900
X = 900-752
X =138
