Question

Cat mai repede daca se poate, ms kiss​

Answer 1

Răspuns:

1.S=(n-2)180°

a)4×180=720°

b)8×180=1440°

c)13×180=2340°

d)18×180=3240°

2.N=(n-2)180/n

a)4×180/6=720/6=120°

b)8×180/10=1440/10=144°

c)13×180/15=2340/15=156°

d)18×180/20=3240/20=162

3.

N=(1-2/n)×180

N/180-1=-2/n

2/n=1-N/180

n=2/(1-N/180)

3.a)n=2/(1-108/180)=>n=5

b)n=2/(1-120/180)=> n=6

c)n=2/(1-150/180)=> n=12

d)n=2/(1-172/180)=> n=45

4. a) 6 un cerc cu raza faci semne

pe circumferința rezultă 6 laturi

b)12 raza /2 => 12 laturi

c)24 r/4 =>24 laturi