👉 In geometry, a circulus is a type of conic section that has two parallel tangents and two intersecting lines. It can be thought of as an ellipse with one focus at the center of the circle, and another point on its major axis (the foci). The major axis is perpendicular to the minor axis, and it passes through the center of the circle. The term "circulus" is derived from the Latin word "circus," which means "circle." It's a