Question

Using eular 's formula find unknown. Faces-20 vertices -12 edges -?

Answer 1

$\huge\color{red}{A}\color{pink}{n}\color{blue}{s}\huge\color{green}{w}\huge\color{yellow}{e}\color{orange}{r}\huge\color{purple}{☯}$

wє knøw,

єulαr'ѕ fσrmulα = fαcєѕ +vєrtícєѕ-єdgєѕ = 2

ѕσ, hєrє,

fαcєѕ = 20

vєrtícєѕ = 12

єdgєѕ(є) = ?

ѕσ,

αccσrdíng tσ quєѕtíσn,

20 + 12 - є = 2

» 32-є = 2

» - є = 2- 32

= -30

» є = 30

dσ flw :'))