Line between Points 與兩點等距的直線

Construct a line through the given point A such as the distance from the point B to this line is equal to the distance from the point C to the constructed line.
畫出一通過A點的直線使B點到該直線的(垂直)距離等於C點到該直線的(垂直)距離。
– TLLF

Information: Line between Points 與兩點等距的直線