Dissecting One Isonona Triangle into Two

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An isonona triangle is one of the following four kinds of isosceles triangles: a triangle with two equal angles of , , or . Each can be dissected into isosceles isonona triangles.

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This Demonstration shows a dissection of one isonona triangle into a triangle with two angles into a triangle with two angles and a triangle with two angles .

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Contributed by: Izidor Hafner (December 2020)
Open content licensed under CC BY-NC-SA


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Details

The term isonona is introduced in the same way as the term isohepta [1, p. 218].

Reference

[1] G. N. Frederickson, Dissections: Plane & Fancy, New York: Cambridge University Press, 1997 p. 218.



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