# diameter

20 08, 2017

## What’s the equator? Geography and the Earth

By |2019-05-30T17:06:09-07:00August 20th, 2017|Physics|Comments Off on What’s the equator? Geography and the Earth

This globe shows the equator running around the widest part of the Earth. Where is the equator? The equator is an imaginary line running around the widest part of the Earth, [...]

29 07, 2017

## What is pi? Simple geometry – Math, circles, circumference, diameter

What is pi? The geometry of a circle What is pi? Pi is a number that is just a little bigger than 3.14. It is the number you get if you divide [...]

29 07, 2017

## Diameter of a circle – Geometry

The geometry of a circle The diameter of a circle is the distance across the circle at the widest part of the circle. The diameter is always equal to twice the radius of the [...]

28 07, 2017

## Circumference of a circle – Geometry

By |2019-04-07T04:49:25-07:00July 28th, 2017|Math|Comments Off on Circumference of a circle – Geometry

The geometry of a circle, with circumference labelled What is the circumference? The circumference of a circle is the distance all the way around the circle. It's the same as the perimeter, but [...]

28 07, 2017

## Definition of a circle – Geometry

By |2017-07-28T08:36:58-07:00July 28th, 2017|Math|Comments Off on Definition of a circle – Geometry

A circle is the set of points on a plane that are all the same distance away from a center point. A circle is the set of points on a plane that are all [...]

28 07, 2017

## Area of a circle – Geometry

By |2017-07-28T00:00:26-07:00July 28th, 2017|Math|Comments Off on Area of a circle – Geometry

The geometry of a circle The area of a circle is the flat surface inside its circumference. The area is always equal to the radius squared, multiplied by π (pi). Here's a proof that [...]

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