Assertion: polygon's number | /r/HasProperty | equal
Facets:
value: to n
type: OTHER
value: always
type: DEGREE
Source sentences:
text: the number of sides of the polygon is always equal to 360 / by the exterior angle.
text: Therefore, the number of sides of a shape the sum of whose internal angles are equal to 900 is equal to (n - 2) x 180 = 900, therefore, n = (900 / 180) + 2 = 7.