What are the parts of a chisel?

The shape of the bit may vary slightly depending on the task for which it is intended, however, most of them have the same basic characteristics:
Chisel head or "impact end"
	The head (sometimes called the "thump end") is the topmost part of the chisel and is struck with a hammer to enable the chisel to cut into the material.
Bit body
	The body is the part of the bit that the user holds during use.
Chisel forging angle
	The forging angle follows the cutting edge and is used to remove debris so that the cutting edge of the bit does not block.
Chisel cutting edge
	The end of the bit opposite the head has a cutting edge, which is a sharp edge used to cut materials. Some types of chisels (such as rollers and coinage chisels) may have wider cutting edges.
	What is the cutting angle? The cutting angle refers to the angle to which the cutting edge is sharpened. Cold chisels traditionally taper at the cutting edge on both sides and typically have a 60 degree cutting angle. Because this angle exists between two sides of the bit that converge at one end (known as the "apex"), it is known as the "included angle".
	Softer metals can benefit from a smaller angle (like 50 degrees) making them easier to cut…
	… while a larger angle (e.g. 70 degrees) will be more reliable, which is useful for harder metals.
	The required angle depends on the material being cut and may vary depending on the manufacturer.