Respuesta :

calculista
the correct question in the attached figure

we know that
if the triangle ABC was rotated resulting in triangle EFD it implies that it retained it's original dimensions.

This means that ABC is proportional to EFD

hence
AB=EF-------> 4.2 cm
BC=FD-------> 3.6 cm
AC=ED------ > 4.5 cm

the answer is
CB=3.6 cm

Ver imagen calculista
askme1972

QUICK ANSWER ON EDG - CB = 3.6 cm