∵ABCD是正方形∴∠DAB=∠CBA=90°AB=AD=BC=AC∵△ABP是等边三角形∴∠PAB=∠PBA=∠APB=60­°BA=PB=PA=BC=AD即PA=AD,PB=BC∴△ADP和△BPC是等腰三角形∴∠ADP=∠APD∠BPC=∠BCP∴∠PBC=∠CBA-∠PBA=30°∠DAP=∠...