Under the inclusive definition, all parallelograms (including rhombuses, rectangles and squares) are trapezoids. The illusion can also be constructed using identical trapezoids rather than identical parallelograms. All of the area formulas for general convex quadrilaterals apply to parallelograms. The blocks can be rectangles or parallelograms. This is also true for all parallelograms, but not for all quadrilaterals. A parallelepiped is a three-dimensional figure whose six faces are parallelograms. All tangent parallelograms for a given ellipse have the same area. This article uses the inclusive definition and considers parallelograms as special cases of a trapezoid. The crease patterns of the Miura fold form a tessellation of the surface by parallelograms. A skewed grid is a tessellation of parallelograms or parallelepipeds. The fretboard inlays were changed to block ones, then restored to double parallelograms in 1984. This fascination led her husband to nickname her his "princess of parallelograms". A lamp like the Tolomeo desk lamp has no parallelograms in either arm. Parallelograms can tile the plane by translation. Antiparallelograms are also called contraparallelograms or crossed parallelograms.