Please answer both questions of Q 29 (optional question too)
Q.29. Show that in a quadrilateral ABCD, AB + BC + CD +  DA < 2 (BD + AC)
                                                                      OR
PQ and RS are two equal and parallel line segments. Any point M not lying on PQ or RS is joined to Q and S. Lines through P parallel to QM and through R parallel to SM meet at N. Prove that the line segments MN and PO are parallel and equal to each other.