[b]Construct the distance of skew lines a and b.[br][br][/b]1. Distance of skew lines. You can change the length of 1 unit by moving the yellow point.[br]2. Translate line a to a point of line b (a[sub]0[/sub]).[br]3. Lines a[sub]0[/sub] and b determines a plane, the dotted line is one its contour lines.[br]4. Let us have a rotated side view of the two lines so that the direction of projection is parallel to this contour line.[br]5. The rotated levels are perpendicular to the contour lines, their distance is the unit..[br]6. Let us find the side view of line b with the help of two points.[br]7. Let us find the side view of line a with the help of a point (its image will be parallel to (b) in this image).[br]8. (b)[br]9. (a) is parallel to (b) but only apparently![br]10. The distance of the two, apparently parallel lines is the true distance of the skew lines.[br][br][i]Note: this construction depends on the unit. If you change the unit, the result changes with it.[/i]