Very Basic Locus of Points for a Parabola
If you move the point Q along the directrix, line b, you will see how the parabola is traced - don't mess with the focus, point F, because that doesn't do what you might think it does - yet!
EC Step 5
תכונות גרף סינוס
Main Circle VS Corner Circle in Square
Pie Chart or Circle Chart
Circumcircle or Circumscribed Circle