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... 변사변 ... (1 element)

... 변사 ... (3 elements)

등변사다리꼴 · 부등변사각형 · 부등변사변형

... 사변 ... (6 elements)

고사변 · 도쿄사변 · 부등변사변형 · 사변형의 · 을미사변 · 평행사변형