Explore! From 3D to 2D: Parabola as Projection of a Circle

This activity shows how we can obtain a parabola by projecting a circle on a plane perpendicular to it. Toolbar Image To modify the cube dimensions, move the green points. Move point P along the circle, or start the animation, to view the locus of point P', which is the projection of P on the plane perpendicular to the circle.