Bob
]]>A shape is reflected in a mirror and the image is reflected in a second, parallel mirror. What transformation takes the original shape onto the final image?
Bob
]]>Bob
]]>The first mirror is AB and the second BC.
The red lines show the ray reflecting off AB, then off BC.
When a ray reflects off a mirror the angle of incidence = the angle of reflection . On my diagram that amounts to saying that the angle marked 1 is the same as the angle marked 2. Also you have parallel lines so you should be able to say something about angle 3.
Keep applying the reflection and parallel rules to find the relationship between angles 1, 2, 3, 4 and 5. That will answer the question.
Bob
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