Question

Complete each statement with the word always, sometimes, or never.

Lines in two parallel planes are $\underline{?}$parallel to each other.

Short answer

Lines in two parallel planes are sometimes parallel to each other.

Step-by-step solution

Step 1. Description of step.

The planes that do not intersect each other are parallel planes.

Step 2. Description of step.

The figure showing the two planes X and Y that are parallel to each other and the lines AB and CD that are lying in the planes X and Y respectively is:

From the diagram it can be observed that if the two planes are parallel to each other then the lines lying on these planes can be skew lines also. It is not necessary that the lines will be parallel.

Step 3. Write the complete statement.

Lines in two parallel planes are sometimes parallel to each other.