what is meant by variable and constant

Hi Adeeb!

A variable can take different values whereas a constant has a fixed value. For example, the lengths of an equilateral triangle can have any values. Therefore, length of an equilateral triangle is a variable. The number of sides of a hexagon is 6, which is fixed. Therefore, the number of sides of a hexagon is a constant. The letters,

*l*,*m*,*n*,*p*,*x*,*y*,*z*, etc., are used to denote variables.Cheers!

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