(** another statement for nine point circle theorem *)

Lemma l_6_272 : forall A B C M E P G Q L,
is_midpoint M B C ->
on_perp_d E A B 1 ->
is_midpoint P B E ->
on_perp_d G A C (0-1) ->
is_midpoint Q C G ->
is_midpoint L E G ->
eq_distance P M L Q.