Open unit disk

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Open, Open source, Open data, Open textbook, Open-source film, Open standard, Open collector, The Open Championship, Open-source car, Open Season (film series), Open-design movement, Doors Open Days, Open world, Open-source software, Open-source governance, Open House London, Open set, Open-source software movement, Open access, Canada Open, Open-pit mining, Open-source hardware, Open science, Open-source religion, Open plan, The Open Definition, Australian Open, Open marriage, Open.Michigan, Open and closed maps, Open-access repository, Senior Open Championship, Open access in Belgium, Open list, Taiwan Open (golf), Open-notebook science, X/Open, Irish Open (golf), Open Bogotá, Open University, Open House, Open-wheel car, Open-Sankoré, Open sandwich, Open-source software development, Chicago Open, Open the Door, Open education, KSB Open, Hybrid open-access journal, Kenya Open, Open-ended, Open gaming, Open university (concept), Phoenix Open, Philippines Open (badminton), Open-source robotics, OpenDocument, Open-work charm, Open–closed principle, Open-core model, Open Graphics Project, The Open Source Definition, Mizuno Open, Irish Poker Open, Open Cycle, Wuhan Open, Garden Open, Open Firmware, Open house (school), Open Barranquilla, Open letter, Near-open central vowel, Open-access monograph, Victorian Open, Open chord, 2007 U.S. Open (golf), Indonesia Open (golf), Open Season, Open-source artificial intelligence, Open-Xchange, Open access in France, Open Access Week, Open-access mandate, Open-source license, Almost open map, Thailand Open (golf), North Dakota Open, Open Knowledge Foundation, Brussels Open, Open E, Western Open, Open business, Open-mid vowel, Open Door, U.S. Open Pool Championship, Open architecture, Open (sport), Nursing Open, Thailand Open, Open classroom, Open-source ventilator, Open problem, The Open Ecology Journal, Open de Portugal, Women's British Open, Open coopetition, 2005 U.S. Open (golf), Open Up, Claro Open Floridablanca, BMJ Open, Business models for open-source software, Biology Open, Open educational practices, Open constituencies, OpenBSD, Open de Limoges, Open book, Wide Open, Open water swimming, Heritage Open Days, List of open-source video games, Danish Open (golf), Dutch Open (golf), Olympia Open, Open Doors, Yomiuri Open, Open government, Korea Open (golf), Maharashtra Open, Alberta Open, Valero Texas Open, Free and open-source software, Open market operation, Polish Open (golf), U.S. Open (golf), Gates Open Research, 1968 US Open – Women's singles, Open-container law, US Open Series, 1984 U.S. Open (golf), 2004 U.S. Open (golf), Open 13, OpenCL, Western Australian Open, US Open (tennis), 2007 US Open (tennis), Open Quaternary, Open system, 2023 Open Championship, Open-air museum