## Answers

Given two lines, they define a plane only if they are:

parallels non coincident or non coincident intersecting.

#### Explanation:

Given two lines, they define a plane only if they are:

parallels non coincident or non coincident intersecting. If they are parallels, taking a point in one of them and the support of the other we can define a plane. If they intersect, with the normal to both directions and their intersection point, a plane can also be constructed.

the plane equation is given by

here

Solve for the intersection point

Once obtained