Assertion: regular polygon's angle | /r/HasProperty | 120 degrees
Facets:
value: in this problem
type: OTHER
value: because 180° 
type: OTHER
Source sentences:
text: In this problem, the interior angle is 120 degrees, so...
text: 360° ÷ 6 = 60° and the interior angle must be 120° because 180° 
text: It has six equal interior angles, each 120 ° .
text: The measure of an interior angle of a regular polygon of n sides is given by:In this problem, the interior angle is 120 degrees, so...
text: angles is 120 degrees.
text: one exterior angle is 120 degrees.
text: All internal angles are 120 degrees.
text: So the largest exterior angle must be 120 degrees.