### Cone

Sections of a cone. a, parabola; b, ellipse; c, hyperbola.

### Conic Sections

Conic sections, cones divided by a plane.

### Cone depicting Conic Sections

Diagram of a cone with spheres and cut by a plane to depict the conic sections.

### Cone depicting Conic Sections

Diagram of a cone with inscribed spheres and cut by various planes to depict the conic sections: circle,…

### Line, Curved

A curved line with endpoints. This illustration resembles a parabola.

### Rolling of Equal Hyperbolas

Illustration of the rolling of equal hyperbolas. If two equal hyperbolas are placed so that the distances…

### Rolling of Equal Parabolas

Illustration of the rolling of equal parabolas. "The two parabolas may be considered as two ellipses…

### Fermat's Spiral

Also called a parabolic spiral, it is a type of Archimedean Spiral. A spiral is defined as "a plane…

### Hyperbolic Parabaloid

Three dimensional representation of a variable hyperbola moving parallel to itself along the parabolas…

### Hyperbolic Parabaloid

Two dimensional representation of variable hyperbola moving parallel to itself along the parabolas as…

### Parabola

One of the three species of conic sections is the parabola.

### Parabola

Illustration showing a parabola as a curve formed by the intersection of the surface of a cone with…

### Parabola

Illustration showing a parabola with curve lines.

### Parabola Foci Properties

The segments between the point of intersection of two tangents to a conic and their points of contact…

### Construction of Parabola Given Base and Height

Illustration used to draw a parabola when given the base and height.

### Cone Intersected by a Plane to Form a Parabola

Diagram of a cone intersected by plane J to form a parabola. Also pictured is a circle formed by the…

### Conic Section Showing Parabola

Illustration showing the definition of a parabola as a conic section. "The section of a right circular…

### Conic Section Showing Parabola

Illustration showing the definition of a parabola as a conic section. "The section of a right circular…

### Conic Section Showing Parabola

Illustration showing the definition of a parabola as a conic section. The plane cuts the cone parallel…

### Conic Section Showing A Parabola

Illustration showing the definition of a parabola as a conic section. The section of a right circular…

### Conic Section Showing A Parabola

An illustration showing the intersection of a plane and a cone. The cone is intersected by a plane parallel…

### Construction Of A Parabola

An illustration showing how to construct a parabola by plotting. "Having given the axis, vertex, and…

### Construction Of A Parabola

An illustration showing how to construct a parabola using a pencil and a string. "Having given the two…

### Construction Of A Parabola

An illustration showing how to construct a parabola. "Given the vertex A, axis x, and a point P. Draw…

### Construction Of A Parabola

An illustration showing how to construct a parabola. "Given the axis of ordinate B, and vertex A. Take…

### Construction of a Parabola

Diagram showing how to construct a parabola when given the directrix (d), the focus (F) and the eccentricity…

### Parabola With Coordinates and Latus Rectum

Illustration of a parabola showing that any point of a parabola is the mean proportional between the…

### Parabola With Focus and Directrix

Illustration of a parabola - a curve which is the locus of a point that moves in a plane so that its…

### Parabola With Focus and Directrix

Illustration of a parabola - a curve which is the locus of a point that moves in a plane so that its…

### Point on Parabola

Illustration of a parabola showing point P is equidistant to the focus and the directrix.

### Point on Parabola

Illustration of a parabola. "If a line PT is drawn from any point P of the curve, bisecting the angle…

### Tangent to a Parabola

Illustration of a tangent line drawn from an external point to a parabola.

### Tangents and Chords of a Parabola

Illustration showing that the area of a parabolic segment made by a chord is two thirds the area of…

### Tangents to a Parabola

Illustration showing that if two tangents RP and RQ are drawn from a point R to a parabola, the line…