New posts in geometry

Does a set of $n+1$ points that affinely span $\mathbb{R}^n$ lie on a unique $(n-1)$-sphere?

geometry euclidean-geometry spheres

Can we prove this geometry question without too much calculation?

geometry euclidean-geometry

BdMO 2016 National Junior Question 8.

geometry contest-math

Why are convex polyhedral cones closed?

general-topology geometry convex-analysis

Intuitive explanation of Poisson distribution

geometry probability-distributions gamma-function poisson-distribution

Does there exist an area-preserving map from the hyperbolic plane to the Euclidean plane? [duplicate]

geometry riemannian-geometry area hyperbolic-geometry

What novel results are there in Euclidean geometry in the last 50-100 years?

geometry euclidean-geometry math-history

Smallest number of $45^\circ-60^\circ-75^\circ$ triangles that tile a rectangle

geometry recreational-mathematics tiling

How do I calculate the equation of a circle given 3 complex numbers?

geometry complex-numbers circles

A property of circles

geometry analysis

Are rotations of $(0,1)$ by $n \arccos(\frac{1}{3})$ dense in the unit circle?

real-analysis geometry analysis

Are there new possibilities in higher dimensions?

geometry

How to parametrize a triangle?

geometry surfaces

Angles satisfying $(\cos\theta,\sin\theta)=(\frac{\sqrt a }{\sqrt{a+b}},\frac{\sqrt b}{\sqrt{a+b}})$ for integer $a$, $b$

geometry trigonometry triangles angle

How to construct three mutually orthogonal circles in stereographic projection?

geometry spherical-geometry geometric-construction stereographic-projections

Prove that $X,Y,Z$ lie on a single line. [duplicate]

geometry

Intersection of two lines in vector form

geometry

How do I generate circular thumbnails with PIL?

python thumbnails python-imaging-library geometry

Quadratic form(?) of Rotation [closed]

geometry euclidean-geometry

What is the Lemoine point useful for?

geometry triangles