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.
i think its a line graph
Is that the 'scale'?
It could be a ruler. Just a number line.
A number line or, in 2 or more dimensions a grid.
scale???????
The scale
an ellipse.
because what word is series of numbers placed at fixed distances on the scale
However unsure as I may be sir/ma'am, I believe the answer is a scale.
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.