Resposta:
1
A = 60°
Q = 45°
2a
[tex] \frac{18}{12} = \frac{y}{9} \\ y = \frac{27}{2} \\ \frac{18}{9} = \frac{x}{12} \\ x = 24[/tex]
2b
[tex] \frac{x}{8} = \frac{2}{4} \\ x = 4 \\ \frac{2}{4} = \frac{3}{y} \\ y = 6[/tex]
3
[tex] \frac{x}{y} = \frac{140}{60} \\ \frac{x}{y} = \frac{7}{3} [/tex]
