Question

what is the perimeter of square cdef? perimeter = units

Explanation:

Step1: Determine side - length of the square

Count the number of grid units between two adjacent vertices. For example, between $C$ and $F$, the horizontal distance (since they have the same $y$ - coordinate) is 2 units. In a square, all sides are equal. So the side - length $s$ of square $CDEF$ is 2 units.

Step2: Use the perimeter formula for a square

The formula for the perimeter $P$ of a square is $P = 4s$. Substitute $s = 2$ into the formula. So $P=4\times2$.

Answer:

8