Oblicz pole i obwód równoległoboku:
a) 6 cm 8 cm 5 cm
obw. 6 c + 8 + 6 + 8 = 28 cm
P = 8 * 5 = 40 [tex]cm^{2}[/tex]
b) 3 cm 4 cm 5 cm
obw. 5 + 4 + 5 + 4 = 18 cm
P = 5 * 3 = 15 [tex]cm^{2}[/tex]
c) 10 cm 5 cm 4 cm
obw. 10 + 5 + 10 + 5 = 30 cm
P = 10 * 4 = 40 [tex]cm^{2}[/tex]
