Isonona Triangles
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An isonona triangle is one of the following four isosceles triangles: a triangle with two equal angles of ,
,
or
. Each can be dissected into similar isonona triangles, all with equal legs. The term isonona is introduced in analogy with the term isohepta [1, p. 218].
Contributed by: Izidor Hafner (September 2020)
Open content licensed under CC BY-NC-SA
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[1] G. N. Frederickson, Dissections: Plane & Fancy, New York: Cambridge University Press, 1997 p. 218.
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