< BACK TO NEWS
importantSYS.SOURCE: Greg Egan• 2026-09-03T16:24:13Z

Steffen's Polyhedron: A Flexible Polyhedron with 14 Triangular Faces

#polyhedron#geometry#mathematics#flexible structures#3d modeling

Steffen's Polyhedron is a non-convex flexible polyhedron with 14 triangular faces that can change shape while maintaining face integrity. It was later superseded by a version with eight vertices, but its construction method remains a key example in geometric flexibility studies.

Comments

Read original article

*** END OF TRANSMISSION ***

> OPENAI ACKNOWLEDGES WIKI INCIDENT AND DEVELOPS DISCLOSURE FRAMEWORK> REFLECTIONS ON ESSENTIAL LIFE VALUES: TIME, HEALTH, AND CONNECTION> CLUCKY ALARM APP UTILIZES ROOSTER SOUNDS AND CHALLENGES TO ENHANCE WAKE-UP EXPERIENCE> UNPATCHED TEAMCITY VULNERABILITY LEADS TO AWS CREDENTIAL THEFT IN JETBRAINS CADENCE BREACH> OCAML PROGRAMMING BOOK BY SYLVAIN CONCHON AND JEAN-CHRISTOPHE FILLIÂTRE> TOBACCO INDUSTRY'S ROLE IN THE EXPANSION OF ULTRA-PROCESSED FOODS> WIKIMEDIA FOUNDATION U.S. STAFF VOTE TO UNIONIZE WITH CWA LOCAL 9415> CRITICAL INTEGER-OVERFLOW VULNERABILITY IN VMWARE WORKSTATION AND FUSION ENABLES HOST CODE EXECUTION> OURA'S PUBLIC OFFERING AND RISING COMPETITION IN THE SMART RING MARKET> 3M'S CONCEALMENT OF PFAS TOXICITY AND ENVIRONMENTAL IMPACT> OPENAI ACKNOWLEDGES WIKI INCIDENT AND DEVELOPS DISCLOSURE FRAMEWORK> REFLECTIONS ON ESSENTIAL LIFE VALUES: TIME, HEALTH, AND CONNECTION> CLUCKY ALARM APP UTILIZES ROOSTER SOUNDS AND CHALLENGES TO ENHANCE WAKE-UP EXPERIENCE> UNPATCHED TEAMCITY VULNERABILITY LEADS TO AWS CREDENTIAL THEFT IN JETBRAINS CADENCE BREACH> OCAML PROGRAMMING BOOK BY SYLVAIN CONCHON AND JEAN-CHRISTOPHE FILLIÂTRE> TOBACCO INDUSTRY'S ROLE IN THE EXPANSION OF ULTRA-PROCESSED FOODS> WIKIMEDIA FOUNDATION U.S. STAFF VOTE TO UNIONIZE WITH CWA LOCAL 9415> CRITICAL INTEGER-OVERFLOW VULNERABILITY IN VMWARE WORKSTATION AND FUSION ENABLES HOST CODE EXECUTION> OURA'S PUBLIC OFFERING AND RISING COMPETITION IN THE SMART RING MARKET> 3M'S CONCEALMENT OF PFAS TOXICITY AND ENVIRONMENTAL IMPACT