Using the theorem 6.1,prove that a line drawn through the mid point of one side of a triangle parallel to another side bisects the third side.
If the area of two similar triangles are equal prove that they are congruent
QR is a tangent at Q. PR //AQ, where AQ is a chord through A, the end point of the diameter
AB and P is a centre. Prove that BR is tangent at B.