Points P and Q have been taken on opposite sides AB and CD, respectively of a parallelogram ABCD such that AP = CQ (Fig. 8.6). Show that AC and PQ bisect each other.
Joining AQ and PC.
Since ABCD is a parallelogram, AB||DC and AP||QC.
Given, AP = CQ.
APCQ is a parallelogram.
We know, diagonals of a parallelogram bisect each other.
Hence AC and PQ bisect each other.