[Top], [画像一覧], [一覧], (GC World : Various Problems ,Max・Min)

Length of segment turned by straight line

A is on a half-line OX.
B is on a half-line OY.
Let's move A and B.
When will the perimeter of ΔPAB be minimized?


  1. : Confirming with measurement
  2. : Confirming with additional line

Forum of Geometric Constructor by Y.Iijima