Euler theorem
type: Concept
preferred label: قضیه اویلر @fa
related: regular icosahedron

icosahedral group
type: Concept
preferred label: گروه بیست وجهی @fa
related: regular icosahedron

regular icosahedron
type: Concept
broader: Platonic solids
preferred label: بیست‌وجهی منتظم @fa
related: dual solid
related: icosahedral group
related: Euler theorem

Platonic solids
type: Concept
narrower: regular icosahedron
preferred label: اجسام افلاطونی @fa

dual solid
type: Concept
preferred label: جسم دوگان @fa
related: regular icosahedron