Assertion: ellipse's point | /r/CapableOf | lie on two conjugate diameters
Facets:
Source sentences:
text: + y 1 v b 2 = 0 {\textstyle {\frac {x_{1}u}{a^{2}}}+{\tfrac {y_{1}v}{b^{2}}}=0} , then the points lie on two conjugate diameters (see below).