| 单词 | heptagon |
| 释义 | heptagon noun[C] uk/ˈhep.tə.ɡən/us/ˈhep.tə.ɡɑːn/aflatshapewith sevenstraightsides  Anar Babayev/iStock/Getty Images Plus/GettyImages Geometrical shapes
heptagon noun[C] uk/ˈhep.tə.ɡən/us/-ɡɑːn/ashapewith sevenstraightsides 七边形 Examplesofheptagonheptagon The design of the coin has not yet been decided, but its shape, which will be an equilateral curvedheptagon, has been settled. From the Hansard archive Example from the Hansard archive. Contains Parliamentary information licensed under theOpen Parliament Licence v3.0 The heptagonal prism is a uniform polyhedron, with two regularheptagonfaces and seven square faces. From Wikipedia  This example is from Wikipedia and may be reused under a CC BY-SA license.Figure 7a shows aheptagoncut into smaller pieces (in two different ways) to yield a proof of the law of cosines. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license.However, there exist arbitrarily large sets of points in general position that contain no empty convexheptagon. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license.In a regularheptagon, in which all sides and all angles are equal, the sides meet at an angle of 5/7 radians, 128.5714286 degrees. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license.The illustration shows an example in which the seven points are the vertices of a regularheptagon. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license.However, some geometrical constructions are not possible with those tools, including theheptagonand trisecting an angle. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license.The badge is a blackheptagonbearing a silver owl, the whole contained within a red annulet. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license.Apart from the heptagonal prism and heptagonal antiprism, no convex polyhedron made entirely out of regular polygons contains aheptagonas a face. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license.For example, sea stars display the symmetry of a pentagon or, less frequently, theheptagonor other polygons. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license.It is a seven sided coin, an equilateral curveheptagonof constant breadth (3 centimetres) and mass 13.5 grams. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license.These examples are from corpora and from sources on the web. Any opinions in the examples do not represent the opinion of the Cambridge Dictionary editors or of Cambridge University Press or its licensors. |
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