Distance Between Two Points in Parametric Form

Distance Between Two Points in Parametric Form

## Formula

For:

$$P=A+t_1\vec d,\quad Q=A+t_2\vec d$$

the distance is:

$$PQ=|t_2-t_1|\sqrt{a^2+b^2}$$

where:

$$\vec d=(a,b)$$

## Usage

- Used to calculate distances between points lying on the same parametrically represented line.