This is the definition of a circle.
One definition of a parabola is the set of points that are equidistant from a given line called the directrix and a given point called the focus. So, no. The distances are not different, they are the same. The distance between the directrix and a given point on the parabola will always be the same as the distance between that same point on the parabola and the focus. Any point where those two distances are equal would be on the parabola somewhere and all the points where those two distances are different would not be on the parabola. Note that the distance from a point to the directrix is definied as the perpendicular distance (also known as the minimum distance).
line
A circle or a sphere would fit the given description.
Straight line
The set of all points a given distance from a center point is a circle. The given distance is the radius, and the given point is the center. Or, in 3 dimensional space, a sphere.
The set of all points in space that are the same distance from a given point is called a sphere.
circle
It is called a circle.
That is a circle.
A circle is a simple shape of Euclidean geometry consisting of those points in a plane that are a given distance from a given point, the center.simplified, it is all the points on a plane that are the same distance from a given point.
"Circle". That "same distance" is the radius of the circle, and that "given point" is the center of the circle.
A circle.
circle, but the given end point is called the center of a circle : )
A sphere
true
None of them.