In an isosceles trapezoid MNKP, the height NR divides the larger base MP

In an isosceles trapezoid MNKP, the height NR divides the larger base MP into segments equal to 5 and 12 cm, and the smaller base 5 cm. Find the midline of the trapezoid.

1) Let’s omit the height NR, which divides the larger base MP into 2 segments equal to 5 and 12 centimeters (according to the problem statement);
2) To find the length of the midline, you need to divide the sum of the bases by 2 (half the sum of the bases)
3) Since the top base is 5 and the bottom 17, we calculate the middle line:
(17 + 5): 2 = 11