Is that the 'scale'?
It could be a ruler. Just a number line.
an ellipse.
The derived set of a set of rational numbers is the set of all limit points of the original set. In other words, it includes all real numbers that can be approached arbitrarily closely by elements of the set. Since the rational numbers are dense in the real numbers, the derived set of a set of rational numbers is the set of all real numbers.
The set of numbers which 3 does not belong is the set of even numbers.
Is that the 'scale'?
It could be a ruler. Just a number line.
A number line or, in 2 or more dimensions a grid.
In the branch of algebra called group theory, they are called equivalent classes or residual classes. They are generated with the fixed distance as the basis of the modulo relationship.
an ellipse.
The set of all points in a plane for which the sum of the distances to two fixed points equals a certain constant. - APEX
Sounds like an elliptical to me.
No. Triangle numbers are a fixed set of numbers that can't be altered to make one certain number turn into a triangle number.
It is a set of metal wrights calibrated to measure fixed numbers of units of mass. They will be used to weight things in a mass balance.
You're trying to describe an "ellipse".
The set of numbers for known distances between the binocular lenses of the ocular is typically standardized for binoculars. This distance, known as interpupillary distance (IPD), ranges from around 55mm to 75mm for most adults. It is important for proper alignment of the binocular lenses with the eyes for a clear and comfortable viewing experience.
The foci (plural of focus, pronounced foh-sigh) are the two points that define a hyperbola: the figure is defined as the set of all points that is a fixed difference of distances from the two points, or foci.