Question

Porfavor alguien me explica??

Answer 1

Teorema de Tales

AB/A'B' = AC/A'C'

AB/5 = 6/4

AB = 6/4 • 5

AB = 7,5

BC/B'C'= AC/A'C'

BC/6 = 6/4

BC= 6/4 • 6

AB = 9