Tolong di jwb no1 smpai 5 (pkai cra) sekian terimakasih ...

1. A = -4,-3
B = -1,-3
C = -1,-2
D = 3,-2
E = 3,2
F = -4,2

2. dua persegi panjang

3. AB = 3 cm BC = 1 cm CD = 4 cm
DE = 4 cm EF = 7 cm AF = 5 cm

4. keliling = { 2 × ( 7 + 3 ) } + { 2 × ( 1 + 3 ) }
= ( 2 × 10 ) + ( 2 × 4 )
= 20 + 8
= 28

5. luas = ( 7 × 4 ) + ( 1 × 3 ) = 28 + 3 = 31