Circle And Line With Contact

Steps

1. Draw the line p₁ passing through the points B and S₁, the resulting line h is one of the solutions
2. Construct a circle centered at B and passing through S₁
3. Through the resulting point C, which is the intersection of the line h and the circle e, we draw a line parallel to p₁ and name it p₂
4. Construct a parabola over the line p₂ with a focus at point S₁