Assertion: regular heptagon | /r/MadeOf | only 15 strips of meccano
Facets:
value: with bars
type: OTHER
Source sentences:
text: Gerard 't Hooft shows a regular heptagon made of only 15 strips of Meccano with bars sizes 8 and 11.
text: Gerard 't Hooft shows a regular heptagon made of only 15 strips of Meccano with bars sizes 8 and 11.