Answer
We can write the angle of reflection at each point:
b: $30^{\circ}$
c: $60^{\circ}$
d: $60^{\circ}$
e: $30^{\circ}$
f: $60^{\circ}$
Work Step by Step
The angle of incidence is equal to the angle of reflection.
Since the angle of incidence on all vertical surfaces is $30^{\circ}$, the angle of reflection on all vertical surfaces is $30^{\circ}$
If the angle of incidence on vertical surfaces is $30^{\circ}$, then the angle of incidence on horizontal surfaces is $60^{\circ}$
It follows that the angle of reflection on all horizontal surfaces is $60^{\circ}$
We can write the angle of reflection at each point:
b: $30^{\circ}$
c: $60^{\circ}$
d: $60^{\circ}$
e: $30^{\circ}$
f: $60^{\circ}$