New posts in euclidean-geometry

Constructing the incenter of a triangle in only six steps

geometry euclidean-geometry geometric-construction

Unit square inside triangle. [duplicate]

geometry euclidean-geometry triangles area geometric-inequalities

What is the expression of mean curvature on a torus?

geometry euclidean-geometry analytic-geometry discrete-geometry

Square in Arbelos without inversion

geometry euclidean-geometry circles

Find the value of $\angle x$ without using trignomoetry

geometry euclidean-geometry

A continuous curve intersects its 90 degrees rotated copy?

general-topology geometry euclidean-geometry curves

which axiom(s) are behind the Pythagorean Theorem

geometry euclidean-geometry axioms

Given two distinct intersecting circles, length of that chord of larger circle which is bisected by the smaller circle is equal to?

geometry euclidean-geometry analytic-geometry circles coordinate-systems

Crux problem #33 with vector approach

geometry vectors euclidean-geometry alternative-proof

Show that $(F,G_1;H,B)$ is an harmonic range in the figure below

geometry euclidean-geometry projective-geometry

Prove that if a, b, x, y are integers with ax + by = gcd(a, b) then gcd(x,y)= 1 [closed]

euclidean-geometry divisibility

A goat is tied to the corner of a shed

euclidean-geometry circles area rectangles

What is topological distortion?

geometry euclidean-geometry projective-geometry projective-space projection

Let $P$ be a point inside $\triangle{ABC}$ such that $\angle{ABP}=10^\circ, \angle{BAP}=\angle{BCP} = 20^\circ$. Show $\triangle{ABC}$ is an isosceles

geometry euclidean-geometry triangles

Are there simple models of Euclid's postulates that violate Pasch's theorem or Pasch's axiom?

geometry euclidean-geometry

Why are there so few Euclidean geometry problems that remain unsolved?

soft-question euclidean-geometry math-history

Largest $n$-vertex polyhedron that fits into a unit sphere

geometry optimization euclidean-geometry polyhedra polygons

Another beauty hidden in a simple triangle (2)

euclidean-geometry triangles

Projection of tetrahedron to complex plane

euclidean-geometry complex-numbers

Distance between incentre and orthocentre.

geometry trigonometry euclidean-geometry triangles