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------------------------------------------------ Many tools have sharp edges that are also known as which of the following?

A. Saws
B. Blades
C. Cutters
D. Edgers

Answer :

Final answer:

The term for sharp edges on tools like knives or swords is 'blades.' These blades, when sharpened, have a smaller surface area that allows them to cut through materials more effectively, with examples seen in Acheulean tools like stone blades and hand-axes.

Explanation:

Many tools bearing sharp edges that are designed for cutting, thrusting, or chipping are known as blades. This term applies to a variety of instruments, from kitchen knives to the sword. The cutting edge of such tools, when sharpened, have a smaller surface area, enabling them to exert a higher pressure with the same amount of force, making them cut through material more effectively. This principle can be seen in Acheulean tools, which include hand-axes made by careful chipping of stones or stone blades attached to handles.

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