<prompt> Katika pembetatu ABC pointi D na E ziko kwenye overlineBC na overlineAC, mtawalia. Ikiwa overlineAD na overlineBE zitapishana kwa T ili ATDT3 na BTET4, CDBD ni nini?asyjozi A,B,C,D,I,T;A0,0;B6,8;C11,0;D9.33,2.66;I7.5,0;T6.5,2;leboT,T,NW;leboD,D,NE;leboE,I,S;leboA,A,S;leboC,C,S;leboB,B,N;choraA--B--C--mzunguko,upana wa mstari0.7;choraA--D,upana wa mstari0.7;choraB--I,upana wa mstari0.7;asy  <response>: Acha F iwe kigezo kwenye overlineAC kiasi kwamba overlineDF ni sambamba na overlineBE. Acha BT 4x na ETx.asyjozi A,B,C,D,I,T,F;A0,0;B6,8;C11,0;D9.33,2.66;I7.5,0;T6.5,2;F9.9,0;choraD--F,upana wa mstari0.7;lebo4x,6.5,5.67,W;lebox,7.35,0.8,W;leboF,F,S;leboT,T,NW;leboD,D,NE;leboE,I,S;leboA,A,S;leboC,C,S;leboB,B,N;choraA--B--C--mzunguko,upana wa mstari0.7;choraA--D,upana wa mstari0.7;choraB--I,upana wa mstari0.7;asyKwa sababu pembetatu ATE na pembetatu ADF zinafanana, tuna fracDFx fracADAT frac43,na DFfrac4x3.Pia, pembetatu BEC na pembetatu DFC zinafanana, kwa hivyo fracCDBC fracDFBE frac4x35x frac415.Hivyo fracCDBD fracCDBC1-CDBC frac4151- 415 frac411. 