Equilateral triangle iff relationship
119111
How does this equality on vertices in the complex plane imply they are vertices of an equilateral triangle?
131919
Vertices of equilateral triangle inscribed in the unit circle
8469
Dividing an equilateral triangle into N equal (possibly non-connected) parts
91325
Finding acute triangle probability
52918
Inside an equilateral triangle $ABC$,an arbitrary point $P$ is taken from which the perpendiculars $PD,PE$ and $PF$ are dropped onto the sides...
21495
Upper Triangular Matrices
52843
framed equations
67774
Number of isosceles triangle.
35698
Given vectors $u,v, i$, find vector $w$ such that $i$ is incenter of triangle $[u,v,w]$
147144
Integral of triangular relation
69043
The equivalence relation generated by a relation
129580
Pulling back (affine or not) connections
130436
bisectors of an angle in a triangle intersect at a single point - proof verification
40596
Proving a relation between inradius ,circumradius and exradii in a triangle
122013
Conditional distribution of geometric variables
48339
A triangle with vertices on the sides of a square, with one at a midpoint, cannot be equilateral
104977
How to calculate equivalence relations