Trapezoid with a given thickness

[MarcelSchaible]

Is it possible to create a trapezoid with a user defined thickness?

[revarbat]

I'm not quite sure what you mean by thickness in this context.

[MarcelSchaible]

I used probably the wrong term. I want to design a part which has the shape of a trapezoid, but has some depth in 3D.

[revarbat]

That looks like a cube() with a prismoid() attached to the top of it.

cube([60,20,10], anchor=BOT)
  attach(TOP, BOT, overlap=0.01)
    prismoid([60,20], [30,20], h=30.01);