11.   Smoothing planes are available with smooth or corrugated bases, and the blade is fully adjustable.

12.   The axial plane is a surface that divides a fold as symmetrically as possible.

13.   The cleavage planes are at right angles to one another.

14.   The new plane is in its final design stage.

15.   The pilot knew the plane was low on fuel.

16.   The plane is meant to be invisible to radar.

17.   The plane is still now, surrounded by the warriors.

18.   The plane was dangerously overloaded.

19.   The plane was in trouble, then it went into a dive.