What is the length of the midsegment of this trapezoid? Enter your answer in the box. units Trapezoid A B C D on the coordinate plane. The vertices of the trapezoid are A begin ordered pair negative 11 comma 3 end ordered pair, B begin ordered pair 0 comma 3 end ordered pair, C begin ordered pair negative 1 comma negative 2 end ordered pair, and D begin ordered pair negative 8 comma negative 2 end ordered pair.