Answer:
9) 21
10) 70
11) 64
12) 31
13) 83
14) 31
Step-by-step explanation:
too easy!!
x+79degree + 35degree = 180 degree ( being the sum of all angle of the triangle )
or, x + 114 degree = 180 degree
or, x = 180degree - 114degree
or, x = 66degree
hence, x = 66 degree.
I think this is the correct answer
the formula is (n-2)180 degrees
so its 7020
144
The given expression is,
So, expanding we have,
