∠BAC=∠BDC;
∠AEB=∠CED;
△AEB∽△EDC
∠AED=∠BEC
∠CBD=∠CAD;
△AED∽△BEC;
BC=CD
∠CBD=∠CDB;
∠BAC=∠CDB;
∠CBD=∠CAD;
△CED∽△CDA
△BCE∽△ACB
∠∠
∠BAC=∠BDC;
∠AEB=∠CED;
△AEB∽△EDC
∠AED=∠BEC
∠CBD=∠CAD;
△AED∽△BEC;
BC=CD
∠CBD=∠CDB;
∠BAC=∠CDB;
∠CBD=∠CAD;
△CED∽△CDA
△BCE∽△ACB
∠∠