Hellp I need the answer

The coordinate of D is (1,1).

Step-by-step explanation:

Given,

The coordinates of the square are A(1,5), B(5,5), C(5,1)

To find the the coordinate of D

Formula

We know that the diagonals of a square bisects each other.

And mid point of any two coordinates ( and will be  )

Let,

O be the mid point of diagonal AC

So, coordinates of O is = (3,3)

Hence, O is also the mid point of diagonal BD.

Let, coordinates of D is (x,y)

According to the formula

= 3 and = 3

or, 5+x = 6 and y+5 = 6

or, x=1 and y=1

So,

The coordinate of D is (1,1).

b

step-by-step explanation:

the word superfluous means unnecessary