Answer:
The length of side AC is 4 units
Explanation:
Find the diagram in the attachment below.
In order to determine the length of side AC, we will use the formula for calculating the distance between two points as shown;
![D = \sqrt{(x_2-x_1)^(2) + (y_2-y_1)^(2)}](https://img.qammunity.org/2021/formulas/mathematics/college/tcoc5b0nzqk0027iphpmd9mz1wsw8nt4u3.png)
For side AC with A (-2, 1) and C (-2, -3)
x1 = -2, y1 = 1, x2 = -2, y2 = -3
![AC = D = \sqrt{(-2-(-2))^(2) + (-3-1)^(2)}\\AC = \sqrt{0^(2) + (-4)^(2)}\\AC = √(16) \\AC = 4](https://img.qammunity.org/2021/formulas/mathematics/college/ecytex8eiuihj98ys8gc4nad8mg21yczjf.png)
The length of side AC is 4 units