πΈοΈππ
πΈοΈπ§
βοΈπ§π
ππΊ
π―βͺ
οΈβ£πͺπ
βοΈπ§π
ππ
πΊοΈβ₯
π·οΈπΏοΈ
ππ π
#geometric structure #polyhedron #vertices #edges #faces #combinatorial geometry