North Carolina Locksmith Practice Exam

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What is a keyway shape called that is a mirror image of another?

Inverse Keyway
Reverse Keyway
Symmetrical Keyway
Reflective Keyway

The correct answer is: Reverse Keyway

A reverse keyway refers to a keyway shape that is a mirror image of another. This means that if you were to take the original keyway and flip it, the new shape would align with the original but in an inverted manner. This design is significant in lock manufacturing and security applications because it may allow for compatibility with different keys while still ensuring that the locks provide a unique lock-and-key relationship. In the context of locksmithing, understanding the differences in keyway shapes is essential since it affects key duplication and security features of the lock system. While there are other terms like "inverse," "symmetrical," and "reflective," they do not accurately capture the idea of being a direct mirror image in the same way that "reverse" does.