width = 5
height = 10
length = 12

fn box(sk1, sk2, scale) {
  boxSketch = startSketchOn(XY)
    |> startProfile(at = [sk1, sk2])
    |> line(end = [0, scale])
    |> line(end = [scale, 0])
    |> line(end = [0, -scale])
    |> close()
    |> extrude(length = scale)
  return boxSketch
}

box(sk1 = 0, sk2 = 0, scale = 5)
box(sk1 = 10, sk2 = 23, scale = 8)
thing = box(sk1 = -12, sk2 = -15, scale = 10)
box(sk1 = -20, sk2 = -5, scale = 10)