Showing that, for any point set in $\Bbb{R}^d$, it is possible to order them so that every consecutive three determine an acute angle
35438
Ordering $n$ points in $\Bbb{R}^d$ so that every three consecutive points determine an acute angle
55070
Fundamental group of complement of $n$ lines through the origin in $\mathbb{R}^3$
63465
Orthogonal Projection of $ z $ onto the Affine set $ \left\{ x \mid A x = b \right\} $
56728
Question about limit points of a Subset of $\mathbb{R}$
127185
How to test whether a set of four points can form a parallelogram
111057
On the position of multiple sub and superindices
28218
Elementary proof for $\sqrt[3]{xyz} \leq \dfrac{x+y+z}{3}$
39416
The space obtained by identifying the antipodal points of a circle
93576
Convex combination of extreme points
133756
Geometric interpretation of $\det(A^T) = \det(A)$
96354
Linear independence of $\sin(x)$, $\sin(2x)$, $\sin(3x)$ in Map($\mathbb{R},\mathbb{R}$)
47848
Determine which of $N$ points is not on $\sin(ax + b)$, where $a$ and $b$ are unknown.
47342
Figure out if a fourth point resides within an angle created by three other points
119779
Sequences of arithmetic and geometric mean
113779
If $P$ is an orthogonal matrix its columns form an orthonormal set.
65888
A counterexample to theorem about orthogonal projection
17786
Existence of Consecutive Quadratic residues