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Skrivnosti Å¡tevil in oblik 7

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RE©ITVE<br />

1 cm<br />

c) C<br />

D<br />

Ë)<br />

e f<br />

1 cm<br />

D<br />

e<br />

C<br />

v<br />

8.<br />

1 cm<br />

dve reπitvi<br />

C<br />

D<br />

A 1<br />

D 1<br />

C 1<br />

R<br />

A<br />

B<br />

A<br />

d)<br />

1 cm<br />

D<br />

v<br />

B<br />

C<br />

A<br />

a<br />

B<br />

A<br />

β<br />

B<br />

9. 10.<br />

1 cm<br />

D<br />

C<br />

1 cm<br />

D<br />

C<br />

1 cm<br />

5. a) b)<br />

D<br />

C<br />

D<br />

1 cm<br />

C<br />

e<br />

ϕ<br />

f<br />

e<br />

v<br />

c)<br />

d d<br />

A a B<br />

1 cm<br />

30°<br />

A a B<br />

A<br />

A<br />

B<br />

Naloga je reπljiva, Ëe je e > v.<br />

11. a) \EAD = 85° b) \EBD = 20°, \AFD = 80°<br />

12. a) Ne moremo izraËunati, ker romb z danima kotoma ne obstaja.<br />

b) ε = 65°<br />

5.11 DELTOID<br />

B<br />

D<br />

r o<br />

C<br />

b<br />

1. a = 4,3 cm; b = 3,2 cm; f = 6,4 cm; β = 57°; δ = 75°<br />

2. a) D<br />

b)<br />

D<br />

1 cm<br />

1 cm<br />

A<br />

B<br />

A<br />

e<br />

f<br />

C<br />

A<br />

c<br />

e<br />

c<br />

C<br />

1 cm<br />

6. a) b)<br />

D<br />

C<br />

a<br />

A a B<br />

c) 1 cm<br />

Ë)<br />

D<br />

C<br />

1 cm<br />

D<br />

A<br />

D<br />

1 cm<br />

d<br />

d<br />

C<br />

B<br />

C<br />

a a<br />

a a<br />

B<br />

B<br />

c)<br />

D<br />

D<br />

Ë) d)<br />

1 cm<br />

1 cm<br />

d d<br />

c c<br />

f A<br />

C<br />

f<br />

C<br />

A α<br />

b<br />

b A<br />

1 cm<br />

d<br />

D<br />

d<br />

C<br />

a<br />

β<br />

a<br />

B<br />

B<br />

r v<br />

r o<br />

B<br />

A<br />

7. kvadrata<br />

B<br />

A<br />

3. Kvadrat <strong>in</strong> romb sta deltoida.<br />

Pravokotnik ni deltoid — njegovi diagonali se ne sekata pod<br />

pravim kotom.<br />

4. a) δ = 104° b) α = 140°, γ = 140°<br />

23

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