Definition:
foci
- FOCIPoints of interest
- FOCIA hyperbola has two
- FOCIPoints of convergence
- FOCIHubs
- FOCICenters of attention
- FOCIWhat an ellipse's major axis passes through
- FOCITwo key points on an ellipse's major axis
- FOCIAn ellipse has two
- FOCICentral points
- FOCICenters of circles
- FOCIPair in an ellipse
- FOCIMeeting points
- FOCIPlaces where lines meet
- FOCIPoints that may have rays
- FOCIAn ellipse has two of them
- FOCIEarthquakes' points of origin
- FOCIConvergence points
- FOCIOrigins of earthquakes
- FOCIGeometry points