concave polygon

concave polygon的音标是[kənˈkeɪv pəˈlɒnjən]；基本翻译是“凹多边形”；速记技巧是：con（共同的）+ cave（洞穴）+ pol（多边形）+ ion（名词后缀）=> 凹多边形。

Concave polygon这个词的词源可以追溯到拉丁语concavus，意为“凹的”。这个词经过变形和组合，形成了英语中的concave polygon。

变化形式：在英语中，concave polygon的形式通常为con-（前缀，表示“共同”）+ cavo-（词根，表示“凹”）+ -polygon（后缀，表示“多边形”）。

相关单词：

1. Convex polygon（凸多边形）：这个词是由英语中的convex（凸起的）和polygon（多边形）组合而成的。它与concave polygon相反，表示一个多边形内部是凸起的。

2. Intersection（交集）：这个词与polygon（多边形）没有直接关系，但与concave和convex有关。当两个多边形相交时，它们的交线可能形成一个小于或大于每个多边形本身的区域。这个区域可以是凹的或凸的。

3. Border（边界）：这个词与polygon（多边形）有直接关系，因为多边形通常有明确的边界。

以上就是concave polygon的相关单词和词源信息，希望对你有所帮助。

常用短语：

1. concave polygon - 凹多边形

2. convex polygon - 凸多边形

3. list of sides - 一组边

4. edge length - 边长

5. perimeter - 周长

6. area - 面积

7. vertex - 顶点

双语例句：

1. The concave polygon has a shorter perimeter than the convex one. (凹多边形周长较短)

2. The list of sides of this polygon is quite diverse. (这个多边形的边数列表相当多样)

3. The edge length of this polygon varies from side to side. (这个多边形的边长从一边到另一边都有变化)

4. The concave polygon has a larger area than the convex one. (凹多边形比凸多边形有更大的面积)

5. The vertex of the concave polygon is located at the center of the polygon. (凹多边形的顶点位于多边形的中心)

6. The convex polygon is more suitable for use in modeling complex shapes. (凸多边形更适合用于建模复杂形状)

英文小作文：

The concave polygon and convex polygon are two types of polygons that are commonly used in geometry and computer graphics. The concave polygon has a shape that is concave or indented, while the convex polygon has a shape that is convex or protruding. These two types of polygons have different characteristics that make them suitable for different applications.

The concave polygon is often used in computer graphics to create detailed and realistic-looking models of complex shapes, such as human faces and bodies. It can also be used to create smooth transitions between different shapes and surfaces, making it a popular choice for animation and video game development.

On the other hand, the convex polygon is often used in computer graphics to quickly generate basic shapes and models that can be easily modified and edited. It is also commonly used in gaming consoles and mobile devices to create simple yet effective 3D graphics.

In summary, the concave polygon and convex polygon are two types of polygons that have different characteristics and applications, but they both play an important role in computer graphics and geometry.