Assertion: octagon | /r/HasProperty | eight angles
Facets:
Source sentences:
text: In geometry, an octagon (from the Greek ὀκτάγωνον oktágōnon, "eight angles") is an eight-sided polygon or 8-gon.
text: In geometry, an octagon (from the Greek ὀκτάγωνον oktágōnon, "eight angles").
text: In geometry, an octagon (from the Greek ὀκτάγωνον oktágōnon, "eight angles") is a polygon that has eight sides.