Assertion: circle's area | /r/HasProperty | 2 b r c
Facets:
Source sentences:
text: Then J c G {\displaystyle J_{c}G} is an altitude of △ A C J c {\displaystyle \triangle ACJ_{c}} , so △ A C J c {\displaystyle \triangle ACJ_{c}} has area 1 2 b r c {