Tolong Dijawab yah kak
Makasih
Makasih
Jawab:
kesebangunan
ΔABC sebangun EDC
<A = <E
<B = < D
<C = < C
perbandingan sisi bersesuaian
AC/CB = EC/CD
20/20 = 4/CD
1 = 4/CD
CD = 4cm
AB/AC = ED/EC
AB/20 = 3/4
AB = 20 (3)/4
AB = 60/4
AB = 15