New posts in geometry

Finding $\lim_{x\to 0} \frac {2\sin x-\sin 2x}{x-\sin x}$ geometrically

calculus geometry limits limits-without-lhopital

Stacking circles with $r=\frac{1}{p}$ inside a circle with $r = 1$

geometry prime-numbers packing-problem

Smallest square containing sectors of disc

geometry packing-problem

Why does the Ellipsograph/Trammel of Archimedes draw an ellipse, really?

geometry conic-sections plane-geometry

What is the chance that an $n$-gon whose vertices lie randomly on a circle's circumference covers a majority of the circle's area?

geometry circles area polygons geometric-probability

how to place a rope with a given length within an orthogonal triangle (see picture)

Lorenz Attractor, its Geometric Model, and 14th Smale's problem.

geometry ordinary-differential-equations dynamical-systems chaos-theory

Unbalance in cake-cutting

probability geometry optimization

Prove that every isometry on $\mathbb{R}^2$ is bijective

real-analysis geometry

How to find the smallest sphere that intersects 3 given lines in 3D?

Prove that $EF$ perpendicular to $OI_a$

Similar triangle inside large triangle split by incenter

geometry triangles

sphere-filling curve

general-topology geometry

Compute ratio of a rectangle seen from an unknown perspective

geometry 3d rectangles

Calculating circle radius from two points on circumference (for game movement)

geometry circles triangles

Equal angles formed by the tangent lines to an ellipse and the lines through the foci.

geometry conic-sections

A prime number wall pool table

geometry algebra-precalculus number-theory elementary-number-theory

More approximately orthogonal vectors than the dimension of the space

geometry orthonormal simplex concentration-of-measure

Area of a circle on sphere

geometry circles spherical-geometry spheres

Barycentric coordinates in a triangle - proof

linear-algebra geometry