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2. Triominoes - Wikipedia

   en.wikipedia.org/wiki/Triominoes

   The green hexagon shows where the green 1-1-3 tile may be played to complete a hexagon. The blue hexagon shows where the blue 3-4-4 tile may be played to complete a different hexagon. The purple dashed hexagon shows where the hexagon cannot be completed because the tile required, illustrated in purple as 0-2-1, does not exist.

3. Pattern Blocks - Wikipedia

   en.wikipedia.org/wiki/Pattern_blocks

   Plastic Pattern Blocks. Pattern Blocks are a set of mathematical manipulatives developed in the 1960s. The six shapes are both a play resource and a tool for learning in mathematics, which serve to develop spatial reasoning skills that are fundamental to the learning of mathematics.

4. Polyhex (mathematics) - Wikipedia

   en.wikipedia.org/wiki/Polyhex_(mathematics)

   One example self-tiling with a pentahex. All of the polyhexes with fewer than five hexagons can form at least one regular plane tiling. In addition, the plane tilings of the dihex and straight polyhexes are invariant under 180 degrees rotation or reflection parallel or perpendicular to the long axis of the dihex (order 2 rotational and order 4 reflection symmetry), and the hexagon tiling and ...

5. Hexagonal number - Wikipedia

   en.wikipedia.org/wiki/Hexagonal_number

   Proof without words that a hexagonal number (middle column) can be rearranged as rectangular and odd-sided triangular numbers. A hexagonal number is a figurate number.The nth hexagonal number h n is the number of distinct dots in a pattern of dots consisting of the outlines of regular hexagons with sides up to n dots, when the hexagons are overlaid so that they share one vertex.

6. Hex map - Wikipedia

   en.wikipedia.org/wiki/Hex_map

   Free online hexagonal graph paper PDF generator; Hexographer, a program for making role-playing game wilderness hex maps in a "classic" style; Hextml, an online program to make hex maps; GM Friend hex mapping tool, an online program to make hex maps with a random map generator; RedBlobGames, Hexagonal Grids, a reference for hexagonal grid ...

7. Centered hexagonal number - Wikipedia

   en.wikipedia.org/wiki/Centered_hexagonal_number

   Centered hexagonal numbers appearing in the Catan board game: 19 land tiles, 37 total tiles. In mathematics and combinatorics, a centered hexagonal number, or centered hexagon number, [1] [2] is a centered figurate number that represents a hexagon with a dot in the center and all other dots surrounding the center dot in a hexagonal lattice.

8. Goldberg polyhedron - Wikipedia

   en.wikipedia.org/wiki/Goldberg_polyhedron

   They are defined by three properties: each face is either a pentagon or hexagon, exactly three faces meet at each vertex, and they have rotational icosahedral symmetry. They are not necessarily mirror-symmetric; e.g. GP(5,3) and GP(3,5) are enantiomorphs of each other. A Goldberg polyhedron is a dual polyhedron of a geodesic polyhedron.

9. Hex (board game) - Wikipedia

   en.wikipedia.org/wiki/Hex_(board_game)

   Hex is played on a rhombic grid of hexagons, typically of size 11×11, although other sizes are also possible. Each player has an allocated color, conventionally red and blue, or black and white. [2] Each player is also assigned two opposite board edges. The hexagons on each of the four corners belong to both adjacent board edges.