Answer:
144
Step-by-step explanation:
It rotates out of 360 degrees, and since it is a pentagon that rotates from two of its vertices, then 360/5 would give us the amount it is rotating from one vertice. So 72. Then multiply it by two because you are moving from e to b.
x² + x = 42
Let the number be x then the square of this number is x²
Sum and equate to 42, that is
∠2, ∠3, and ∠4
