Tolong jawab beserta caranya

3) a , c , d

4) p = 2/4 x 6 = 3 m
l = 2/4 x 5 = 2,5 m

5) BC = AD , CD = AB
EH = FG , GH = EF

ABCD ~ EFGH,
3 : 4 = 9 : 12