In the figure below is represented the rehulated triangular prism ABCDEF with AD=AB=4 cm. The measure of the angle between lines BF and AD is:
a) 30°
b) 45°
c) 60°
d) 90°​

In the figure below is represented the rehulated triangular prism ABCDEF with ADAB4 cm The measure of the angle between lines BF and AD isa 30b 45c 60d 90 class=