Question

what is the perimeter of square hlik?

Explanation:

Step1: Find side - length of square

Count the number of grid units between two adjacent vertices. For example, between \(H\) and \(I\), the \(x\) - coordinate of \(H\) is \(- 9\) and the \(x\) - coordinate of \(I\) is \(9\), and the \(y\) - coordinates are the same (\(y = 7\)). The distance \(d=\vert-9 - 9\vert=18\).

Step2: Calculate perimeter of square

The formula for the perimeter \(P\) of a square is \(P = 4s\), where \(s\) is the side - length. Since \(s = 18\), then \(P=4\times18 = 72\).

Answer:

72