English
Etymology
poly- + diabolo|(di)abolo, from the resemblance of a diabolo in cross-section to two right isosceles triangles joined at the vertices of their right angles

Noun
wikipedia
polyabolo (plural polyabolos or polyaboloes; by analogy with diabolo, polyabolos would be the correct plural, but polyaboloes is just as commonly seen, if not more so)

#geometry A polyform made by joining right isosceles triangles edge to edge in various arrangements.

Synonyms
polytan

• 2005-08-25 15:16 - Paul G - +Wikipedia link

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