Hadid studied mathematics at the American University of Beirut before moving, in 1972, to London to study at the Architectural Association School of Architecture. There she studied with Rem Koolhaas, Elia Zenghelis and Bernard Tschumi. Her former professor, Koolhaas, described her at graduation as "a planet in her own orbit." Zenghelis described her as the most outstanding pupil he ever taught. 'We called her the inventor of the 89 degrees. Nothing was ever at 90 degrees. She had spectacular vision. All the buildings were exploding into tiny little pieces." He recalled that she was less interested in details, such as staircases. "The way she drew a staircase you would smash your head against the ceiling, and the space was reducing and reducing, and you would end up in the upper corner of the ceiling. She couldn't care about tiny details. Her mind was on the broader pictures—when it came to the joinery she knew we could fix that later. She was right.' Her AA graduation thesis, "Malevich's Tektonik", was a concept and design for a 14-level hotel on London's Hungerford Bridge.executed as an acrylic painting, inspired by the works of the Russian suprematist artist Kazimir Malevich.