If you color isosceles rectangular triangles with n colors at the three sides you get

With a complete set of one-sided pieces it seems to be possible to construct n congruent triangles with n^2 tiles, where each triangle has a different border color. For n=2, 5, 6 the constructions are shown below, for n=8 look at the title and for n=1, 3, 4, 7 the construction is possible as well. So far I haven't seen a solution for n>8. Would you like to write your own program to get a solution? May be there is a systematic approach for a construction.

Various rectangles, triangles and replicas of polyabolos can be found. If the number of long sides with same color is odd, these edges can't match and you have to look for multiple figures as shown above or you can choose pairs of different edge types (silver marked) instead of edge colors (yellow marked). With such pieces n-fold replicas of n-abolos or n-tans may be possible even if n is odd.

Colors | One-sided Pieces | Two-sided Pieces | ||
---|---|---|---|---|

Number | Examples | Number | Examples | |

2 | 8 | 2x2 square | 6 | |

3 | 27 | 3-fold replicas of triabolos | 18 | see online puzzle |

4 | 64 | 8x4 rectangle, 4sqrt(2)x4sqrt(2) square, size 8 triangle, other 4-fold replicas of tetrabolos |
40 | 4x5 rectangle |

5 | 125 | 5-fold replicas of pentabolos | 75 | 5-fold replicas of triabolos |

6 | 216 | hexabolo star | 126 | |

7 | 343 | 196 | 7sqrt(2)x7sqrt(2) square, size 14 triangle | |

8 | 512 | 16x16 square | 288 | 12x12 square |

2 colors, 8 one-sided pieces:

3 different edge types, 27 one-sided pieces:

4 colors, 64 one-sided pieces:

5 different edge types, 125 one-sided pieces:

6 colors, 216 one-sided pieces:

8 colors, 512 one-sided pieces:

4 colors, 40 two-sided pieces:

5 different edge types, 75 two-sided pieces:

7 colors, 196 two-sided pieces:

8 colors, 288 two-sided pieces:

Pieces can be cut from place mats giving some nice puzzle you can easily solve.

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