New posts in polyhedra

A convex polyhedron has triangular and quadrilateral faces meeting four to a vertex. Prove the number of triangles is always the same; find the number

general-topology geometry polyhedra

Fitting a dodecahedron inside a cube

3d polyhedra solid-geometry platonic-solids

Inscribing Platonic solids in each other: why can't you put a dodecahedron in an octahedron?

geometry alternative-proof convex-geometry polyhedra platonic-solids

How to prove there are exactly eight convex deltahedra?

geometry polyhedra solid-geometry

Biggest Little Polyhedron

geometry polyhedra open-problem extremal-combinatorics combinatorial-geometry

Polyhedra with identical faces

recreational-mathematics polyhedra

3D picture of the 38-sided Engel space-filling polyhedron

geometry tiling polyhedra

Is the Euler characteristic $\chi =2$ for the prism with a hole?

general-topology polyhedra

How to check whether a convex polyhedron is contained in another convex polyhedron?

convex-analysis linear-programming polyhedra polytopes discrete-geometry

What hexahedra have faces with areas of exactly 1, 2, 3, 4, 5, and 6 units?

geometry recreational-mathematics polyhedra solid-geometry

Polyhedra vs Polytope

terminology definition polyhedra polytopes discrete-geometry

Linear isoparametrics with dual finite elements

polyhedra finite-differences duality-theorems polytopes finite-element-method

What is the name of this hexagon/pentagon polyhedron?

geometry terminology polyhedra

Any other Caltrops?

geometry recreational-mathematics polyhedra solid-geometry

Inequality for each $a, b, c, d$ being each area of four faces of a tetrahedron

geometry inequality polyhedra

Why does a convex polyhedron being vertex-, edge-, and face-transitive imply that it is a Platonic solid?

geometry alternative-proof symmetry polyhedra platonic-solids

What are the rules for a Tetartoid pentagon?

geometry polygons polyhedra

Maximum area of triangle inside a convex polygon

combinatorics polyhedra combinatorial-geometry extremal-combinatorics convex-geometry

Tetrahedron inside a sphere

geometry polyhedra

Finding generators of toric ideals

abstract-algebra geometry algebraic-geometry polyhedra toric-geometry