Geometric values all related to DNA according to wikipedia, and a cute hand drawn diagram.

For each base pair, considered relative to its predecessor, there are the following base pair geometries to consider:

Shear: a force acting in a direction parallel to a surface

Stretch: a one-way stretch

Stagger: an eclipsed conformation is a conformation in which X and Y on adjacent atoms A, B are in closest proximity, implying that torsion angle X–A–B–Y is 0°.

Buckle:

Propeller: rotation of one base with respect to the other in the same base pair.

Opening:

Shift: displacement along an axis in the base-pair plane perpendicular to the first, directed from the minor to the major groove.

Slide: displacement along an axis in the plane of the base pair directed from one strand to the other.

Rise: displacement along the helix axis.

Tilt: rotation around the shift axis.

Roll: rotation around the slide axis.

Twist: rotation around the rise axis.

x-displacement:

y-displacement:

Inclination:

Tip:

Pitch: the height per complete turn of the helix.

I will work on a diagram that is an improvement over the one found on wikipedia.