Assertion: triangle's side | /r/HasProperty | divisible
Facets:
value: by primes of the form
type: OTHER
Source sentences:
text: Heronian triangles that have no integer altitude (indecomposable and non-Pythagorean) have sides that are all divisible by primes of the form 4 k +1.  
text: Hence all Heronian triangles that are not Pythagorean have at least two sides that are divisible by primes of the form 4 k +1.
text: Therefore, all Heronian triangles have at least one side that is divisible by primes of the form 4 k +1.
text: Hence all Heronian triangles that are not Pythagorean have at least two sides that are divisible by primes of the form 4 +1.
text: Therefore, all Heronian triangles have at least one side that is divisible by primes of the form 4 +1.