Assertion: triangle's circle | /r/HasProperty | inscribed
Facets:
Source sentences:
text: Every Heronian triangle has a rational inradius (radius of its inscribed circle): For a general triangle the inradius is the ratio of the area to half the perimeter, and both of these are rational in a Heronian triangle.
text: Each hyperbolic triangle has an inscribed circle but not every hyperbolic triangle has a circumscribed circle (see below).