Question

1. find the mid - segment length

Explanation:

Step1: Recall mid - segment formula

The length of the mid - segment of a trapezoid is given by $\frac{b_1 + b_2}{2}$, where $b_1$ and $b_2$ are the lengths of the parallel sides. Here, $b_1=9$ and $b_2 = 13$.

Step2: Calculate mid - segment length

Substitute the values into the formula: $\frac{9 + 13}{2}=\frac{22}{2}=11$.

Answer:

11