▁trunc ated ▁oct ah ed ron . ▁It ▁has ▁ 3 8 ▁faces : ▁ 2 4 ▁is os cel es ▁tri angles , ▁ 6 ▁squares , ▁and ▁ 8 ▁hex ag ons . ▁ ▁Top olog ically , ▁the ▁squares ▁corresponding ▁to ▁the ▁oct ah ed ron ' s ▁vertices ▁are ▁always ▁regular , ▁although ▁the ▁hex ag ons , ▁while ▁having ▁equal ▁edge ▁lengths , ▁do ▁not ▁have ▁the ▁same ▁edge ▁lengths ▁with ▁the ▁squares , ▁having ▁different ▁but ▁altern ating ▁angles , ▁causing ▁the ▁tri angles ▁to ▁be ▁is os cel es ▁instead . ▁ ▁Rel ated ▁poly hed ra ▁The ▁rect ified ▁trunc ated ▁oct ah ed ron ▁can ▁be ▁seen ▁in ▁sequence ▁of ▁rect ification ▁and ▁trunc ation ▁operations ▁from ▁the ▁oct ah ed ron . ▁Further ▁trunc ation , ▁and ▁altern ation ▁creates ▁two ▁more ▁poly hed ra : ▁ ▁See ▁also ▁▁ ▁Rect ified ▁trunc ated ▁t etra hed ron ▁ ▁Rect ified ▁trunc ated ▁cube ▁ ▁Rect ified ▁trunc ated ▁d ode c ah ed ron ▁ ▁Rect ified ▁trunc ated ▁ icos ah ed ron ▁ ▁References ▁▁ ▁C ox eter ▁Reg ular ▁Poly top es , ▁Third ▁edition , ▁( 1 9 7 3 ), ▁D over ▁edition , ▁ ▁( pp .   1 4 5 – 1 5 4 ▁Chapter ▁ 8 : ▁Tr unc ation ) ▁ ▁John ▁H . ▁Con way , ▁He idi ▁Burg iel , ▁Cha im ▁Good man - Str ass , ▁The ▁Sym met