Question

what is the area of square ghij?

Explanation:

Step1: Determine side - length of square

Count the grid units between two adjacent vertices. For example, between \(G(9,0)\) and \(J(9,9)\), the vertical distance (which is the side - length \(s\) of the square) is 9 units.

Step2: Use area formula for square

The area formula of a square is \(A = s^2\). Since \(s = 9\), then \(A=9^2\).
\[A = 81\]

Answer:

81