Question

(b) In the figure, AC = 25 cm, CE = 5 cm,
BC = 18 cm, CD = 3.6 cm. If AB is 20
cm find DE
E
B
[3]​

Answer 1

Step-by-step explanation:

AC/CE=BC/CD

angle ACD=angle ECD

triangle ACD~ triangle ECD

(SAS criteria for similarity)

AC/CE=AB/ED

25/5=20/ED

ED=4 cm