An isohepta triangle one of three isosceles triangles: a triangle with two angles , a triangle with two angles or a triangle with two angles . Each can be dissected into similar isohepta triangles all of equal legs.[more]
This Demonstration shows isohepta triangles and their expansions.[less]
 G. N. Frederickson, Dissections: Plane & Fancy, New York: Cambridge University Press, 1997 p. 218.