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翻訳と辞書　辞書検索 [ 開発暫定版 ] スポンサード リンク Tangential trapezoid ： ウィキペディア英語版 Tangential trapezoid In Euclidean geometry, a tangential trapezoid, also called a circumscribed trapezoid, is a trapezoid whose four sides are all tangent to a circle within the trapezoid: the incircle or ''inscribed circle''. It is the special case of a tangential quadrilateral in which at least one pair of opposite sides are parallel. As for other trapezoids, the parallel sides are called the bases and the other two sides the ''legs''. The legs can be equal (see isosceles tangential trapezoid below), but they don't have to be. ==Special cases== Examples of tangential trapezoids are rhombi and squares. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Tangential trapezoid」の詳細全文を読む スポンサード リンク 翻訳と辞書 : 翻訳のためのインターネットリソース Copyright(C) kotoba.ne.jp 1997-2016. All Rights Reserved.