Figure A uniform random flat quadrangulation of perimeter 15170 embedded in three-dimensional space.Figure A uniform random flat quadrangulation of perimeter 4000Figure A uniform random flat quadrangulation of perimeter 14698Figure A uniform random flat quadrangulation of perimeter 12134Video A rotating version of the cover image: a flat quadrangulation of perimeter 15170.Video A rotating version of the image above.Video A uniform random flat quadrangulation of perimeter 5000.