FOCI

Sun, 10 Aug '25

An ellipse has two of these

Sat, 14 Dec '24

Central points

Sun, 15 Oct '23

Two inside an ellipse

Sun, 19 Mar '23

Centers of attention

Sun, 26 Jun '22

Pair in an ellipse

Fri, 26 Nov '21

Duo in an ellipse

Thu, 1 Jul '21

Points of interest