If you are planning to tile your your floor and want something different from the usual tiling which is usually made up of rectangles and squares, the following semiregular tessellations might be of good use to you.
In the first figure, the tessellation is made of squares and octagons (8-sided polygons).
The second figure is made of squares, equilateral triangles, and hexagons (6-sided polygons).
The third fiugre is made of equilateral triangles and dodecagons (12-sided polygons).
The tessellations above were made manually by yours truly using GeoGebra. :-)