About: http://webisa.webdatacommons.org/54862413

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	They practice dragging the vertices to form certain types of triangles, and then they con???rm the Pythagorean Theorem for right triangles: a^2 + b^2 = c^2.
http://www.w3.org/ns/prov#wasQuotedFrom	mathforum.org