Assertion: triangle's measure | /r/HasProperty | taken with positive and negative signs
Facets:
value: in such a way
type: MANNER
value: namely
type: OTHER
Source sentences:
text: Namely, the measures A i {\displaystyle A_{i}} should be taken with positive and negative signs in such a way that the sum of the signs of A i {\displaystyle A_{i}} for all parts that enclose a given point p {\displaystyle p} is 1