Question

已知ae＝ac++ad等于ab++则角d等于∠b吗

Answer 1

因为∠EAB=∠CAD,即∠1=∠2所以∠1+∠BAD=∠2+∠BAD,即∠EAD=∠CAB在△ABC和△ADE中,AC=AE,AB=AD,∠CAB =∠EAD所以△ABC和△ADE全等所以∠B=∠D