<prompt> Ni idadi gani ya sentimita katika urefu wa EF ikiwa ABsambamba CDsambamba EF?asyukubwa 4cm,4cm;jozi A,B,C,D,E,F,X;A0,1;B1,1;C1,0;X0,0;D13C23X;chora A--B--C--D;kuchoraD--B;kuchoraA--C;E0.6,0.4;F1,0.4;kuchoraE--F;leboA,A,NW;leboB,B,NE;leboC,C,SE;leboD,D,SW;leboE,shift-0.1,0E;leboF,F,E;lebo100 cm,katikatiC--D,S;lebo150 cm,katikatiA--B,N;asy  <response>: Kwa kuwa ABparallel EF, tunajua kwamba angle BAC angle FEC na angle ABC angle EFC. Kwa hiyo, tunaona kwamba pembetatu ABC sim pembetatu EFC na AA Kufanana. Kadhalika, pembetatu BDC sim pembetatu BEF.Kutokana na kufanana kwetu, tunaweza kupata milinganyo miwili: dfracBFBC dfracEFDC na dfracFCBC dfracEFAB .Kwa kuwa tuna AB na DC na tunataka kupata EF, tunataka viwango vingine vyote vitoweke. Kwa kuwa BF FC BC, tunajaribu kuongeza milinganyo yetu miwili: anzaalignfracBFBC fracFCBC fracEFDC fracEFAB.fracBCBC 1 EFkushotofrac1DC frac1ABkuliafrac1frac1DC frac1AB EFendalign Sasa tunachomeka DC 100text cm na AB 150text cm, inatupa EF 60text cm. 