Assertion: ellipse's vertex | /r/HasProperty | 1 9
Facets:
Source sentences:
text: 81 x 2 + 49 y 2 = 1 Center ( 0 , 0 ) , Vertices ( 1 9 , 0 ) , ( − 1 9 , 0 ) , ( 0 , 1 7 ) , ( 0 , − 1 7 ) , Foci ( 0 , 4 2 63 ) , ( 0 , − 4 2 63 )