Tolong jawab dengan caranya untuk sekarang terima kasih

Kesebangunan dan Kongruen

No.4
CD/CA = CE/CB
9/12 = 12/12+p
3/4 = 12/12+p
3(12+p) = 12 x 4
36 + 3p = 48
3p = 48-36
3p = 12
p = 12/3
p = 4 cm

No.5
6/6+4 = 3/X
6/10 = 3/X
3/5 = 3/X
3X = 3 x 5
3X = 15
X = 15/3
X = 5 cm

No.6
AD/AB = AE/AC
6/10 = X/X+2
3/5 = X/X+2
3(X+2) = 5X
3X + 6 = 5X
6 = 5X-3X
6 = 2X
X = 6/2
X = 3 cm

AD/AB = DE/BC
6/10 = y/10
3/5 = y/10
3 x 10 = 5y
30 = 5y
y = 30/5
y = 6 cm

*semoga membantu. sukses selalu ^_^