polyabolo

== English == === Etymology === Blend of poly- +‎ diabolo, from the resemblance of a diabolo in cross-section to two right isosceles triangles joined at the vertices of their right angles. === Pronunciation === === Noun === polyabolo (plural polyabolos or polyaboloes) (geometry) A polyform made by joining right isosceles triangles edge to edge in various arrangements. ==== Synonyms ==== polyomino polytan