what is the name of the line with which a compass aligns?

The name of the line with which a compass aligns is called a: needle.
A compass can be defined as a scientific instrument that is made up of a magnetized pointer that is typically used to show cardinal directions.
In Science, there are four (4) main cardinal directions and these include the following:
A needle is also referred to as a compass needle and it can be defined as a terminology that is used to denote the line with which a compass aligns.
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