Question

what is the perimeter of square cdef?
perimeter = units

Explanation:

Step1: Identify square side length

From the graph, the horizontal distance between points D (4, -6) and E (6, -6) is $6-4=2$ units, so side length $s=2$.

Step2: Calculate square perimeter

Perimeter of a square is $4\times s$.
<Expression>
$4\times2=8$
</Expression>

Answer:

8 units