Exercise 71 Page 244

Before we begin, let's assign names to the given lines for easier reference. To find the distance between $\ell$ and $k,$ we will follow a three-step process.

1. Pick an arbitrary point on line $\ell$ and construct the perpendicular line $p$ through it.
2. Find the intersection point between lines $k$ and $p.$
3. Find the distance between the point chosen in the first step and the point found in the second step.