Plane and anylytical geometry curve demonstrator

The utility model provides a plane analytical geometry ellipse and hyperbola demonstrator which is mainly composed of a straight ruler with a slotted hole, two hollow rivets embedded in the slotted hole, a center sliding sleeve and a rope, wherein, both ends of the straight ruler are provided with magnetic blocks. The hollow rivets and the center sliding sleeve are provided with screw nuts. The utility model provides a plane analytical geometry parabola demonstrator composed of a directrix guiding ruler, a T-square with a sliding sleeve and a rope, wherein, both ends of directrix guiding ruler are provided with magnetic blocks, and one end of the rope is provided with a magnetic block. The T-square is sheathed with the directrix guiding ruler by the sliding sleeve at one end thereof. The sliding sleeve is provided with a positioning screw. The plane analytical geometry curve demonstrator can be used for conveniently demonstrating the forms of ellipse, hyperbola and parabola and the geometric characteristics thereof.