Mathematics Facts

Perfect Numbers

Some numbers are more special than others. According to Pythagoras (569 BC - 475 BC) and Euclid (325 BC - 265 BC), some are so special that they called them mystical or perfect numbers. The first ... Continue reading

Perfect Numbers

Origins Of The Meter

The origins of the meter go back to at least the 18th century. At that time, there were two competing approaches to the definition of a standard unit of length. Some suggested defining the meter as ... Continue reading

The engraving shows the casting of the platinum-iridium alloy called the '1874 Alloy.'

How To Calculate The Circumference Of A Circle

A circle is what you get if you take a straight line and bend it around so that its ends touch. You can demonstrate this by taking a piece of stiff wire and doing just that: bring the ends of the wire ... Continue reading

Fibonacci Patterns In Nature?

Often it takes a second look to see how mathematical numbers and patterns fit into the natural world. Numbers, after all, are manmade. However some very interesting number patterns underlie some ... Continue reading

Clematis hybrid, eight petals

More Mathematics Facts


  1. What Are Cubes And Cube Roots?
  2. What Are Squares And Square Roots?


  1. Eratosthenes Measured Earth’s Circumference—Centuries Before Columbus Sailed
  2. How To Calculate The Area Of A Circle
  3. How To Calculate The Area Of A Cylinder
  4. How To Calculate The Area Of A Right Cone
  5. How To Calculate The Circumference Of A Circle
  6. How To Calculate The Volume Of A Cylinder
  7. How To Calculate The Volume Of A Right Cone
  8. Kepler's Conjecture
  9. Picture This
  10. What Is The Pythagorean Theorem?


  1. Leaps and Bounds
  2. Origins Of The Meter
  3. Unit Of Luminous Intensity (candela)
  4. Who Invented Zero?

Math Function:

  1. Math On the Mind

Number Theory:

  1. Fibonacci Patterns In Nature?
  2. Perfect Numbers
  3. Prime Numbers


  1. Mobius Strip