Question

已知P是線段AB的黃金分割點，AP＞PB，則下列等式成立的是

1. A.
   AB²＝AP·PB
2. B.
   AP²＝PB·AB
3. C.
   BP²＝AP·AB
4. D.
   AP∶AB＝AB∶PB

Answer 1

B