help me with my question.

Find the measures (in degrees) of the remaining angles of trapezoid ABCD (not shown) if AB I DC and mLA = 530 and mLC = 1260 MLB = m LD =\fThe drawing shows trapezoid ABCD with AB I DC; also, M and N are midpoints of AD and BC respectively. A B M N D C i Given: MN = 5.5 and DC = 6.9 Find : AB AB =The drawing shows trapezoid ABCD with AB I DC; also, M and N are midpoints of AD and BC, respectively. B M D C Ci Given: AB = 6x + 9 and DC = 8x - 1 Find: MN in terms of x Because MN connects the midpoints M and N of AD and BC, respectively, MN is the median of trapezoid ABCD. Find AB + DC in terms of X. AB + DC = Find MN in terms of x. MN =A territory's perimeter approximates the shape of a trapezoid with these dimensions for boundaries: 310 miles on the north, 505 miles on the east, 425 miles on the south, and 245 miles on the west. 310 mi 245 mi 505 mi 425 mi (D IfA and B are points located midway across the north and south boundaries, what is the approximate distance (in miles) from A to B? mi