Riddle

Reverses left/right but not up/down?

Choose an answer

A.It reverses up/down too
B.It's an optical illusion
C.Your eyes are curved
D.Inverts Z-axis
Hint: It's a 2-word phrase with 12 letters, starting with "I".

Answer

Inverts Z-axis

Why this is the answer

If you point your finger to the right, the mirror image points to the right. The reversal is actually in the 'depth' (front to back) dimension relative to the mirror's surface.

This riddle is filed under Math Riddles and rated Medium.

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