用形状相同或不同的平面封闭图形,把一块地面既无缝隙、又不重叠地全部覆盖,在几何里叫做平面镶嵌。平面镶嵌作为探究性活动,在近两年中考题中时常出现。请看如下例:例图1是一块地砖图案,用这样的地砖铺地,可以得到如图2所示的效果.其中,地砖中的图案铺成了由正八边形和正方形 With the same or different shapes of the closed planes, a piece of ground is covered with no gaps and overlaps. In geometry, it is called flat mosaic. Plane inlays are used as exploratory activities and appear frequently in the examination questions in the past two years. Please see the following example: Example Figure 1 is a floor tile pattern, with such a floor tile floor, you can get the effect shown in Figure 2. Among them, the pattern in the floor tile is paved by a regular octagon and square