Answer:
The correct option is 4.
Step-by-step explanation:
Given information: P(1,2) and Q(-4,2)
We need to find the length of side PQ of the polygon.
Distance formula:
\(D=\sqrt{(x_2-x_1)^2+(y_2-y_1)^2}\)
Using distance formula we get
\(PQ=\sqrt{(-4-1)^2+(2-2)^2}\)
\(PQ=\sqrt{(-5)^2+(0)^2}\)
\(PQ=\sqrt{25}\)
\(PQ=5\)
The length of side PQ of the polygon is 5 units. Therefore the correct option is 4.
