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Q: What is the name of the line that is used to define a parabola?
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What is the name of the point you use to define a parabola?

All of the points on a parabola define a parabola. However, the vertex is the point in which the y value is only used for one point on the parabola.


What is the name of a point that you used to define a parabola?

it's called the focus


What is the directrix of a parabola?

"From the geometric point of view, the given point is the focus of the parabola and the given line is its directrix. It can be shown that the line of symmetry of the parabola is the line perpendicular to the directrix through the focus. The vertex of the parabola is the point of the parabola that is closest to both the focus and directrix."-http://www.personal.kent.edu/~rmuhamma/Algorithms/MyAlgorithms/parabola.htm"A line perpendicular to the axis of symmetry used in the definition of a parabola. A parabola is defined as follows: For a given point, called the focus, and a given line not through the focus, called the directrix, a parabola is the locus, or set of points, such that the distance to the focus equals the distance to the directrix."-http://www.mathwords.com/d/directrix_parabola.htm


What is a mathematical name for a line?

The name "line" is actually used in math.The name "line" is actually used in math.The name "line" is actually used in math.The name "line" is actually used in math.


Is there another not as common name for a parabola?

The parabola is a type of conic section, . The problem is that this is not a descriptive as the if the word "parabola" is used. The reason is that it is not the only geometric shape that can be derived by slicing a cone with a plane. Use the link below to see a drawing and learn more.


A double solid white line is used to define a traffic lane where travel in the same direction is permitted on both sides of the line but?

A double solid white line is used to define a traffic lane where travel in the same direction is permitted on both sides of the line but no changing or crossing of lanes.


Why tunnel used parabola shape?

for strength


Is s three is the least number of points that can be used to define a plane?

yes, three points in the least number of points that can be used to define a plane. if you used two points you would only have a line, and one point is a point


Why must there be at least two lines on any given plane?

A single line is not sufficient to define a plane. You can find a plane such that the line is in it. But if you then rotate the plane using that line as the axis of rotation, you can get an infinite number of planes such that the line belongs to each and every one of the planes.


How did Rene Descartes use the parabola?

Descartes used the parabola to illustrate algebraic equations. He put these equations on a visible plane using the Cartesian coordinate system and they sometimes took the shape of a "u" curve, or a parabola.


What is a Most recent common ancestors?

are used to name and define clades phylogenetically.


Which class is used to define the controls in c?

In .NET, the class name is System.Windows.Forms.Control