Answer: 15
Step-by-step explanation:
By the trapezoid midsegment theorem,

You and add cause this sound like a problem where you add
The domain refers to the set of possible input values, the domain of a graph consists of all the input values shown on the x-axis.
The range is the set of possible output values, which are shown on the y-axis.
In the given graph, it shows that:
Domain (x-values): All reals
Range (y-values): y ≥ 2
Sin(theeta) = square root(3)/2
theeta = sin inverse [square root (3)/2]
theeta = 60 degrees
as seen from trignometric table