In a triangle, a midsegment is a line segment that connects the midpoints of two sides of the triangle. In this case, TV is the midsegment of triangle RSU.
The property of a midsegment states that it is parallel to the third side of the triangle and its length is half the length of that third side.
Given that RS = 30, it can be inferred that TV, being the midsegment, would be:
\[ TV = \frac{1}{2} \times RS \] \[ TV = \frac{1}{2} \times 30 = 15 \]
So, the length of TV is 15.