Question

what is π? what is ¶? what is∆?​

Answer 1

Answer:

The number π (/paɪ/) is a mathematical constant. It is defined as the ratio of a circle's circumference to its diameter, and it also has various equivalent definitions.

Answer 2

1.Pi

The symbol used by mathematicians to represent the ratio of a circle's circumference to its diameter is the lowercase Greek letter π, sometimes spelled out as pi, and derived from the first letter of the Greek word perimetros, meaning circumference.

3.Triangle (∆), one of the basic shapes in geometry. Delta (letter) (∆), a Greek letter also used in mathematics and computer science. ... Symmetric difference, in mathematics, the set of elements which are in either of two sets and not in their intersection