Assertion: right triangle's area | /r/HasProperty | the same
Facets:
value: at the beginning
type: TEMPORAL
value: at the end
type: TEMPORAL
Source sentences:
text: The area encompassed by the outer square never changes, and the area of the four triangles is the same at the beginning and the end, so the black square areas must be equal, therefore a2 + b2 = c2.
text: Let's check if the areas are the same: 32 + 42 = 52 Calculating this becomes: 9 + 16 = 25