Mirror Images at 60 Degree Angle · CAP 2000 #11

Physics · optics

Problem

Two mirrors are joined together so that they make an angle of 60° as shown. [Figure: Two mirrors meeting at point with 60° angle, person P standing on the line that bisects the 60° angle] A person stands at a point P which is on the line which bisects the 60° angle. How many images of herself does the person see? (a) 1 (b) 3 (c) 6 (d) infinite number

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