4. CD = 9 cm, AD = 3 cm, CE = 12 cm, EB = p cm
[tex] \frac{cd}{ad} = \frac{ce}{eb} \\ \frac{9}{3} = \frac{12}{p} [/tex]
9p = 12.3
9p = 36
p = 36/9 = 4 cm
5.
[tex] \frac{3}{x} = \frac{6}{10} [/tex]
3.10 = 6x
30 = 6x
x = 30/6 = 5 cm
6. AE = x cm, CE = 2 cm, AD = 6 cm, BD = 4 cm
[tex] \frac{ae}{ce} = \frac{ad}{bd} \\ \frac{x}{2} = \frac{6}{4} [/tex]
4x = 6.2
4x = 12
x = 12/4 = 3 cm
DE = x cm, BC = 10 cm
AB = AD + BD
= 6 + 4 = 10 cm
[tex] \frac{de}{bc} = \frac{ad}{ab} \\ \frac{x}{ 10} = \frac{6}{10} [/tex]
10x = 10.6
10x = 60
x = 60/10 = 6 cm
4. [tex]\frac{CD}{CA} = \frac{CE}{CF}[/tex]
[tex]\frac{9}{3} =\frac{12}{P}[/tex]
P = [tex]\frac{3 X 12}{9}[/tex]
p = [tex]\frac{36}{9}[/tex]
p = 4 cm
5. [tex]\frac{x}{3} = \frac{6+4}{6}[/tex]
[tex]\frac{x}{3} = \frac{10}{6}[/tex]
x = [tex]\frac{3 x 10}{6}[/tex]
x = [tex]\frac{30}{6}[/tex]
x = 5 cm
6. [tex]\frac{AD}{DB} = \frac{AE}{AC}[/tex]
[tex]\frac{6}{4} = \frac{x}{2}[/tex]
X = [tex]\frac{6 X 2}{4}[/tex]
X = [tex]\frac{12}{4}[/tex]
X = 3 cm
[tex]\frac{AD}{AB} = \frac{DE}{BC}[/tex]
gambar blur, angka yang disamping y tidak jelas
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