<prompt> Katika Delta ABC, overlineDE parallel overlineAB, CD 4 cm, DA 10 cm, na CE 6 cm. Ni idadi gani ya sentimita katika urefu wa overlineCB?asyjozi A,B,C,D,E;A -2,-4; B 4,-4; C 0,0; D A3; E B3;kuchoraE--D--C--B--A--D;leboA,A,W; leboB,B,dir0; leboC,C,N; leboD,D,W;leboE,E,dir0;asy  <response>: Kwa kuwa DE parallel AB, tunajua kwamba angle CDE angle CAB na angle CED angle CBA. Kwa hiyo, kwa kufanana kwa AA, tuna pembetatu ABC sim DEC. Kisha, tunapata: anzaalignfracCBCE fracCACD fracCD DACDfracCB6textcm frac4textcm 10textcm4textcm frac72 CB 6textcm cdot frac72 21text cm.mwishopanga 