<Qua-2024-744>, hint
Let <CDB=2x <FDB=x then <DBA=<DAB=2x
Let <ADB=y=<DAF=<AFB=<DBF
AE+EF=DE+EB=DB=DA. Triangles AFB and DBF are congruent (AF=DB, BF common,
<AFB=<DBF=y) Hence <FAB=<FDB=x...><EDA=x. <EAD=<DAB-<EAB=2x-x=x=<ADE ,y=x
Hence 5x=180 x=36 <ABD=2x=72.
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