Dear Sirs!
I tried to send this question with an attached picture. As the question might not have arrived, I send it again, without the picture. Please excuse me, when it arrives twice now:
The semicircle above the distance AB cuts the middle perpendicular m of the distance AB in the point C. On the quarter arc between point A and C is chosen a point D and is drawn through him the tangent t to the semicircle. The distance BD cuts m in the point E. The parallel to AB through E cuts t in point F. On which line moves F if D moves on the quarter arc from A to C without reaching the point C?
F moves straight down to A, but why? How can I find a prove?
Sincerly, Enoimreh
I tried to send this question with an attached picture. As the question might not have arrived, I send it again, without the picture. Please excuse me, when it arrives twice now:
The semicircle above the distance AB cuts the middle perpendicular m of the distance AB in the point C. On the quarter arc between point A and C is chosen a point D and is drawn through him the tangent t to the semicircle. The distance BD cuts m in the point E. The parallel to AB through E cuts t in point F. On which line moves F if D moves on the quarter arc from A to C without reaching the point C?
F moves straight down to A, but why? How can I find a prove?
Sincerly, Enoimreh