Algebra beginning with P

Algebraic Terms
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Pascal's Triangle

A triangular array of binomial coefficients.

The number pattern is used in many algebra uses, do you see the pattern for getting from row to row? Adding 2 adjacent numbers in the row above provides the number between in the row below the pair.

Pascal's Triangle
Pi

The ratio of the circumference of a circle to the diameter. An incredible number that appears over and over again in the study of math. Pi is a value that is consistent across all pairs of diameters and circumferences, but, it is not a rational number. Pi is a number that is defined as decimal with an ever changing decimal digits in a non-recurring decimal pattern.

A typical approximation used for hand calculations would be ....
3.14 or 22/7.

Pi

You can see details at Wikipedia.

See a sample of Pi to 1,000,000 decimal places at link Pi = 3.14159265359 ....

Using Pi, we can see that a bike with 27" diameter wheel will travel the 27 x π ≈ 84.82 inches each time the wheel turns one time. Therefore, the bike will travel about 7 feet each time the wheel rotates completely once.

Positive Integer

A number greater than 0.

1/3, 0.5, 1, 2, 3, 4, 5, ...