Isohepta Triangles

Out[]=

triangle

1

2

3

iteration

1

2

3

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5

An isohepta triangle one of three isosceles triangles: a triangle with two angles

π/7

, a triangle with two angles

2π/7

or a triangle with two angles

3π/7

. Each can be dissected into similar isohepta triangles all of equal legs.

This Demonstration shows isohepta triangles and their expansions.