Show that the point (1,7) , (4,2) , (-1,-1) and (-4,4) are the vertices of a square

Show that the point (1,7) , (4,2) , (-1,-1) and (-4,4) are the vertice

1.	Show that the point (1,7) , (4,2) , (-1,-1) and (-4,4) are the vertices of a square
Answer» Yes,these points forms a square Use by distance formula