0
A parabola has a single focus point. There is a line running perpendicular to the axis of symmetry of the parabola called the directrix. A line running from the focus to a point on the parabola is going to have the same distance as from the point on the parabola to the closest point of the directrix.
In theory you could look at a parabola as being an ellipse with one focus at infinity, but that really doesn't help any. ■
Wiki User
∙ 14y ago
Add your answer:
Earn +20 pts
How many foci does a circle have?
One.
How many foci does half of a hyperbola have?
2
What is a parabola that opens to the right called?
It is a square root mapping. This is not a function since it is a one-to-many mapping.
How many points are needed to determine a parabola?
3?
Parabola is the point at which the parabola is at its lowest or highest point?
A parabola is NOT a point, it is the whole curve.
Does a conic section have vertices?
No, a conic section does not have vertices. If it is a circle, it has a center; if it is a parabola or hyperbola, it has a focus; and if it is an ellipse, it has foci.
How many foci does the graph of a hyperbola have?
Two foci's are found on a hyperbola graph.
What is foci?
Foci, (the plural of focus), are a pair of points used in determining conic sections. They always fall on the major axis of symmetry of a conic. For example, in a circle, there is only one focus, the centerpoint. Every distance from the focus to any other point on the circle will be the same. In a parabola, the distance from any point of the parabola to the focus equals the distance from the centerpoint to the directrix. In a hyperbola, the difference of the distances between a point on the hyperbola and the focus points will be constant, and in an ellipse, the sum of the distances from any point on the ellipse to one of the foci is constant.
How many foci does an ellipse have?
Two
How many foci does a circle have?
One.
How many foci does a hyperbola have?
2
How many foci does half of a hyperbola have?
2
How many foci does a graph of a hyperbola have?
2
How many foci are at the center of an ellipse?
An ellipse has 2 foci. They are inside the ellipse, but they can't be said to be at the centre, as an ellipse doesn't have one.
How many foci does a graph and hyperbola have?
geometry sorry
What is the foci of an eclipse?
The foci of an eclipse is 2.
How many vertices points and edges does a parabola have?
A parabola has one vertex (but not in the sense of an angle), infinitely many points and no edges.
