Hi there!
To solve this problem, we need to find x, and plug it into measure c to get the value of c.
First, let's find x.
Since we know that the sum of all measures of a triangle is always equal to 180 degrees...
6x + 2x + 2x = 180
10x = 180
x = 18
Now, let's plug it in.
2x
= 2*18
= 36
So, measure c is 36 degrees.
Hope this helps!