FOCI

• A hyperbola has two

• Algebraic meeting points

• An ellipse has two

• An ellipse has two of them

• Center points

• Centering points

• Centers

• Centers of activity

• Centers of attention

• Centers of circles

• Centers, of a sort

• Centers; hubs

• Central points

• Circles' parts

• Concentration points

• Convergence points

• Convergences

• Converging points

• Earthquake origins

• Earthquakes' points of origin

• Ellipse pair

• Ellipse points

• Ellipse twosome

• Ellipse-determining points

• Epicenters

• Fixed points, in geometry

• Geometry points

• Hubs

• Hyperbola pair

• Initially, fundamentals of calculus intrigue mathematical set (4)

• Main points

• Meeting places

• Meeting points

• Origins of earthquakes

• Pair in an ellipse

• Places where lines meet

• Points

• Points of concentration

• Points of convergence

• Points of interest

• Points that may have rays

• Points where rays meet

• Points where rays of light come together

• Rays' meeting places

• Two key points on an ellipse's major axis