[" (3) If "P,Q" and "R" are the mid-points of the sides "BC" ,CA and "AB" of a thangle and AD "],[" is the perpendicular from "A" on "BC" ,prove that "P,Q,R" and "D" are concyclic."]

If P,Q and R are the mid-point of the side BC,CA and AB of a triangle and AD is the perpendicular form A and BC, prove that P,Q and D are concylic.

P ,\ Q\ a n d\ R are, respectively, the mid points of sides B C ,\ C A\ a n d\ A B of a triangle A B C and AD is the perpendicular from vertex A to BC,then prove that the points P,Q,R and D are cyclic.

P ,\ Q\ a n d\ R are, respectively, the mid points of sides B C ,\ C A\ a n d\ A B of a triangle A B C and AD is the perpendicular from vertex A to BC,then prove that the points P,Q,R and D are cyclic.

If D is the mid point of side BC of a triangle ABCand AD is perpendicular to BC, then

In the figure, D E and F are midpoints of sedes AB,BC and AC respectively. P is the foot of the perpendicular from A to side BC. Show that points D, E,F and P are concyclic.

P, Q, R are the midpoints of the sides AB, BC and CA of the triangle ABC and O is a point within the triangle, then OA + OB + OC =

In Delta ABC, AB = AC. D , E and F are mid-points of the sides BC, CA and AB respectively . Show that : AD is perpendicular to EF.

P, Q , R and S are respectively the mid-points of the sides AB, BC, CD and DA of a quadrilateral ABCD in which AC = BD. Prove that PQRS is a rhombus.

P, Q , R and S are respectively the mid-points of the sides AB, BC, CD and DA of a quadrilateral ABCD in which AC = BD. Prove that PQRS is a rhombus.