mohon dijawab dengan benar

ED = 16 cm
EC = 6 cm
EB = 4 cm
< BAD + < BCD = 180°
a.
Sudut-sudutnya yang bersesuaian sama besar
yaitu :
< BAD = < BCE
< ADC = < CBE
< AED = < BEC
Sisi-sisi yang bersesuaian sebanding yaitu :
EB/ED = EC/EA = BC/AD

b.
EB/ED = EC/EA = BC/AD

c.
EB/ED = EC/EA
4/16 = 6/EA
4 × EA = 6 × 16
4EA = 96
EA = 96/4
EA = 24 cm

AB = EA - EB
AB = 24 - 4
AB = 20 cm