New posts in geometry

Baby Rudin 1.14 is essentially Thales's theorem?

real-analysis geometry complex-numbers soft-question

Is it true that the whole space is the direct sum of a subspace and its orthogonal space?

linear-algebra geometry quadratic-forms bilinear-form symplectic-linear-algebra

What's the measure of the radius of the biggest circle below?

geometry euclidean-geometry plane-geometry

Bodyguards and Laser Beams

geometry puzzle

Characterization of Volumes of Lattice Cubes

geometry matrices number-theory

How many maximum number of isosceles triangle are possible in a regular polygon of $n$ sides?

geometry combinatorics

How many faces does the resulting polyhedron have?

geometry puzzle polyhedra

Automorphisms of punctured plane

complex-analysis geometry complex-numbers conformal-geometry mobius-transformation

How to calculate the side of a right triangle from the coordinates of points and the length of one side?

geometry triangles pythagorean-triples

How do I know if a Lat,Lng point is contained within a circle?

google-maps latitude-longitude geometry point curve

The image of every strictly non-expanding map between spheres is contained in an open hemisphere?

geometry lipschitz-functions convex-geometry convex-hulls contraction-operator

Geometric notion of addition for the real projective line

geometry projective-space geometric-construction

Check if polygon is inside a polygon

javascript algorithm google-maps geometry polygon

Sphere inscribed in a cone

geometry volume spheres

Precisely, what is the polar coordinate system?

geometry ordinary-differential-equations multivariable-calculus differential-geometry riemannian-geometry

Packing of parallelograms with sides $1$ and $\sqrt{2}$ and angle $45^{\circ}$ in a rectangular container

geometry contest-math plane-geometry packing-problem

Find how many parts are in a triangle

geometry triangles

$\operatorname{SO}(n)$ is an (abstractly) maximal subgroup of $\operatorname{SL}(n)$

linear-algebra group-theory geometry lie-groups

proving an equality in euclidean geometry

geometry euclidean-geometry

Results related to The Happy Ending Problem

geometry combinatorics discrete-geometry