About: http://webisa.webdatacommons.org/164259157

Property	Value
http://www.w3.org/1999/02/22-rdf-syntax-ns#type	http://www.w3.org/ns/prov#Entity
http://www.w3.org/ns/prov#value	If a quadrilateral is a rectangle, the diagonals have the same length.
http://www.w3.org/ns/prov#wasQuotedFrom	portangelesschools.org