Question

ABCD IS A QUADRILATERAL .
IS AB PLUS BC PLUS CD PLUS DA LESS THAN 2 (AC PLUS BD)

Answer 1

Yes it is true
This is correct . Anyone can prove it .

Answer 2

yes it is true u just can take few examples of length and breadth and find our diagonal and do remaining equation by ur own u will find it it is true
hope it helped u:)