4 6 (5)5(7) 7 (6) (8) 7 9 Node y *.00 152.00 8.00 152.00 9 *.00 152.00 (10) (12) 10 *.00 94.00 (9) (11) 10 N 12 (13) 11 *.00 94.00 13 12 *.00 94.00 (15) 13 *.00 94.00 (17) (19) 14 (14) 15 (16) (18) (20) 14 *.00 40.00 18 15.00 40.00 (29) 21 (23) (25) (27) 16 *.00 40.00 19 (22) (24) (26) (28) 17 *.00 40.00 18 *.00 40.00 20 21 22 23 24

Calculate area of triangles in yellow region. Remember x co ordinates are not zeroes . They all have some unknown values. the total horizontal distance is 200 ft and vertical is 188 ft. take co ordinates of node 20 as (0,0).