Question

isme kya karna hai btaye plz​

Answer 1

Step-by-step explanation:

Euler's is V+F=E+2

Vertices + Faces = Edges+ 2

i) Cube

V= 8

F= 6

E =12

Euler's Law,

V+F=E+2

6+8=12+2

14=14

ii)A prism

Faces=5

V=6

E=9

Euler's Law,

V+F=E+2

5+6=9+2

11=11

iii) Icosahedron

F=8

V=12

E=18

Euler's Law,

V+F=E+2

8+12=18+2

20=20

iv) Pyramid

F=5

V=5

E=8

Euler's Law,

V+F=E+2

5+5=8+2

10=10

v) Pentagonal Pyramid

F=6

V=6

E=10

Euler's Law,

F+V=E+2

6+6=10+2

12=12

vi)Heptagonal Pyramid,

F=8

V=8

E=14

Euler's Law,

F+V=E+2

8+8=14+2

16=16