![]() ![]() ![]() Draw that shape again immediately next to your first shape. In one row, draw a simple shape that spans the entire height of the row (see image above), such as a square, triangle, a lopsided rectangle (parallelogram), or other shape of your choice. Divide the paper up into equal width rows (or columns) about 3-4 rows for a small sheet will work very well.ģ. We recommend starting with half of a regular 8.5" x 11" white sheet of paper.Ģ. Start with a piece of paper and a pencil. ![]() Since a mosaic extends over a given area without leaving any region uncovered, the geometric meaning of the word tessellate is “to cover the plane with a pattern in such a way as to leave no region uncovered.” By extension, space or hyperspace may also be tessellated.No cutting is involved for this starter tessellation design, making it a great starting project for younger artists.ġ. The diminutive of tessera was tessella, a small, square piece of stone or a cubical tile used in mosaics. Tessellate (verb), tessellation (noun): from Latin tessera “a square tablet” or “a die used for gambling.” Latin tessera may have been borrowed from Greek tessares, meaning “four,” since a square tile has four sides. *Steven Schwartzman’s The Words of Mathematics (1994, The Mathematical Association of America) says: Michael South has contributed some thoughts to the discussion. You can learn more by following the links listed in Other Tessellation Links and Related Sites. There are also tessellations made of polygons that do not share common edges and vertices. There are an infinite number of tessellations that can be made of patterns that do not have the same combination of angles at every vertex point. Now continue to paste and position and see if you can tessellate it.Hold down on one of the images and copy it to the clipboard.If you try tiling the plane with these units of tessellation you will find that they cannot be extended infinitely. Interestingly there are other combinations that seem like they should tile the plane because the arrangements of the regular polygons fill the space around a point. Here are the eight semi-regular tessellations: The arrangement of polygons at every vertex point is identical.A semiregular tessellation has two properties which are: You can also use a variety of regular polygons to make semi-regular tessellations. There are four polygons, and each has four sides.įor a tessellation of regular congruent hexagons, if you choose a vertex and count the sides of the polygons that touch it, you’ll see that there are three polygons and each has six sides, so this tessellation is called “ 6.6.6“:Ī tessellation of triangles has six polygons surrounding a vertex, and each of them has three sides: “ 3.3.3.3.3.3“. Now keep going around the vertex in either direction, finding the number of sides of the polygons until you get back to the polygon you started with. Since it’s a square, it has four sides, and that’s where the first “4” comes from. Here’s how: choose a vertex, and then look at one of the polygons that touches that vertex. For all the others, the interior angles are not exact divisors of 360 degrees, and therefore those figures cannot tile the plane.Ī tessellation of squares is named “ 4.4.4.4“. This works for the triangle, square, and hexagon, and you can show working tessellations for these figures. Since the regular polygons in a tessellation must fill the plane at each vertex, the interior angle must be an exact divisor of 360 degrees. You can work out the interior measure of the angles for each of these polygons: Shape Also, if you look at 6 triangles at a time, they form a hexagon, so the tiling of triangles and the tiling of hexagons are similar and they cannot be formed by directly lining shapes up under each other – a slide (or a glide!) is involved. When you look at these three samples you can easily notice that the squares are lined up with each other while the triangles and hexagons are not. Only three regular polygons tessellate in the Euclidean plane: triangles, squares or hexagons.We can’t show the entire plane, but imagine that these are pieces taken from planes that have been tiled. A regular tessellation means a tessellation made up of congruent regular polygons. The word “tessellate” is derived from the Ionic version of the Greek word “tesseres,” which in English means “four.” The first tilings were made from square tiles.Ī regular polygon has 3 or 4 or 5 or more sides and angles, all equal. A tessellation is created when a shape is repeated over and over again covering a plane without any gaps or overlaps.Īnother word for a tessellation is a tiling.Ī dictionary * will tell you that the word “tessellate” means to form or arrange small squares in a checkered or mosaic pattern. ![]()
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