I am looking for a symbol to say that one geometrical figure coincides with another without writing the phrase "is coincident with." For example, the altitude $a$ of an equilateral triangle coincides with a median $m$ of the triangle. Each point of one figure is in the same place as some point of the other figure.

The idea is not just that one figure is congruent with another, since congruent figures can be in different places.

Also, the idea is not just that a figure with one name is identical to itself under a different name, as if a point is used in one figure, two figures, a 1000 figures, or no figures, and the differences among those names are insignificant. We say that figures are coincident when they are understood independently from one another and seem to be able to exist without each other. We are often surprised when we discover they they in fact coincide.

In set notation, we would say $A=B$, if $A$ is the set of all points in one figure and $B$ is the set of all points in the other figure, but I prefer to avoid set theory.

I have not seen any symbol used in print or online. The following is a list of symbols that I think mathematicians might use:

1. Geometrically equivalent to ≎
2. Geometrically equal to ≈
3. Geometrically equal to ≑
4. Equivalent to ≍
5. Equivalent to ⇌
6. Equivalent to ⟷
7. Equivalent to ⇔
8. Equivalent to ⟺
9. Equivalent to ≡
10. Equal to =