Grupa A://1$,\frac{1}{2}$. //2.$\frac{a}{b}$, $\frac{f}{c + d}$. //3. 3,5cm, 2,5cm, 3cm. //4. B-C. //6.$\frac{9}{16}\ $+$\ \frac{3}{4}$. //7.9cm, 12cm, 15cm. //10. 12cm, 13,5cm, 21,cm, 18cm. //11.$\frac{8}{3}$.

Grupa A`: //1.$\frac{1}{2}$. //2.$\frac{b}{a}$, $\frac{f}{a + b}$. //3. 4cm, 2,5cm, 2cm. //4. B-C. //6. $\frac{4}{25}$ , $\frac{2}{5}$. //7. 6cm, 8cm, 10cm. //10. 12cm, 13,5cm, 21cm, 18cm. //11.$\frac{8}{3}$.

Grupa B: //1.$\frac{b}{d}$, $\frac{f}{a + d}$. //2. 2. //3. B-A. //4. 3cm, 2cm, 2,5cm. //6.$\frac{16}{25}$ + $\frac{4}{5}$. //7. 10cm, 24cm, 26cm. //10. 10,5cm, 22,5cm, 19,5cm, 27cm. //12. 1,5.

Grupa B`: //1.$\frac{a}{c}$, $\frac{f}{b + c}$. //2.2. //3.B-A. //4. 4,5cm, 4cm, 3,5cm. //6. $\frac{9}{25}$, $\frac{3}{5}$. //7. 15cm, 36cm, 39cm. //10. 10,5cm, 22,5cm, 19,5cm, 27cm. //12. 1,5.