Answer: Perimeter of ΔWXY is given by

Explanation:
Since we have given that

By using Mid point theorem, "if line joining the midpoints of the any two sides , then this line becomes parallel to the third side and it becomes half of the third side".
So here , if consider firstly Q and R are mid-points of XW and XY then,
QR║WY so,

Similarly,
QS║XY so,

Similarly,
RS║XW, so

Perimeter of ΔWXY is given by
