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Skrivnosti Å¡tevil in oblik 7

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d<br />

D<br />

p2<br />

A a<br />

B<br />

C<br />

p3 p1<br />

b<br />

c<br />

obseg - o je vsota dolž<strong>in</strong> vseh mejnih stranic<br />

o = a + b + c + d<br />

plošč<strong>in</strong>a - p je velikost ploskve izražena s<br />

plošč<strong>in</strong>skimi enotami<br />

p = p1 + p2 + p3<br />

D c C<br />

d<br />

A a<br />

B<br />

A<br />

D<br />

c c<br />

e<br />

a a<br />

f<br />

v<br />

C<br />

b<br />

p = a + c · v<br />

2<br />

o = a + b + c + d<br />

D C<br />

e<br />

f<br />

OBSEGI <strong>in</strong> PLOŠČINE<br />

o ; p<br />

a<br />

p = e 2<br />

· f<br />

D C<br />

e f<br />

a<br />

B<br />

A a B<br />

A a B<br />

o = 4a o = 4a<br />

p = a · va = b · vb<br />

o = 2 · a + 2 · b<br />

D C<br />

va<br />

A a B<br />

a<br />

p = a · va<br />

o = 4 · a<br />

C<br />

b a<br />

vc<br />

A B<br />

c<br />

p = a · va = b · vb = c · vc = osnovnica · viš<strong>in</strong>a<br />

2 2 2 2<br />

o = a + b+ c<br />

paralelogrami<br />

večkotniki<br />

trapezi<br />

trikotniki<br />

štirikotniki s<br />

pravokotnima<br />

diagonaloma<br />

deltoid romb kvadrat<br />

o = 2a + 2c<br />

D C<br />

vB<br />

va<br />

b<br />

A a<br />

B

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