棱锥体简介04.30objectives学习目标tolearnthe-华译网翻译公司.pdfVIP

翻译样稿 北京华译网翻译公司 Introduction to Pyramid 04.30 棱锥体简介 04.30 Objectives 学习目标 • To learn the concept of a pyramid • 学习棱锥体的概念 • To understand different types of pyramids • 了解不同类型的棱锥体 • To learn the terminology associated with a pyramid • 学习与棱锥有关的术语 We are all familiar with the famous pyramids of Egypt. These monumental structures have stood there for centuries and have left the tourists and archaeologists, the world over, in awe by their sheer architectural grandeur. 我们都熟悉埃及著名的金字塔。这些伟大的建筑几个世纪以来屹立在那里，令世 界各地的游客和考古学家对它们的宏伟庄严无不叹为观止。 In the realm of geometry, a pyramid is a polyhedron formed by connecting a polygonal base and a point, called the apex or vertex outside the plane of the polygon. The end points of each base edge and the apex form a triangle. It is a conic solid with a polygonal base. 在几何学领域中，棱锥是一个通过连接多面体底面和一个底面外的点（称为顶点 或端点）形成的多面体。每个底边的端点和顶点连接形成一个三角形。它是一个 有着多边形底面的圆锥。 The square pyramid, with a square base and four triangular outer surfaces, is a common version. When unspecified, the base is usually assumed to be a square. A pyramid with an n-sided base will have n + 1 vertices, n + 1 faces and 2n edges. 四角形棱锥，有一个正方形底面和四个三角形外表面，为一般类型。未特别指定 时，底面通常认为为正方形，一个底面有n 个边的棱锥有n 加1 个端点，n 加1 个面和2n 个边。 Parts of a Pyramid 棱锥的组成部分 A pyramid is made by connecting a base to an Apex. 一个棱锥是通过连接底面和顶点形成的。 Types of Pyramids 棱锥的类型 There are many types of Pyramids and they are named after the shape of their base. 棱锥有多种类型并根据它们底面的形状命名。 Triangular Pyramid: 三棱锥: This pyramid has a triangle at its base. It has four faces including the base, four 翻译样稿 北京华译网翻译公司 翻译样稿 北京华译网翻译公司 vertices and six edges. 这种棱锥的底面为一个三角形，有包括底面的四个面，四个端点和六条边。 Pentagonal Pyramid: 五棱锥: This pyramid has a pentagon as its base. I