Assertion: heptagon's angle | /r/HasProperty | 120 degrees
Facets:
Source sentences:
text: All internal angles are 120 degrees.
text: Among constant-width shapes with a given width, the Reuleaux triangle has the minimum area and the sharpest (smallest) possible angle (120°) at its corners.
text: All the sides are equal and all the angles are 120 degrees and the total is 540 degrees.