# How to Find the Radius Between Two Points?

The radius of a circle, sphere, or polygon is the length of the line from the center of the object to any point on its edge. Use the following formulas to calculate a radius.

http://www.ehow.com/how_8000439_radius-between-two-points.html

## How to Find the Points From a Radius to an Angle?

A circle is not only bounded by its geometric shape---it is also bounded by its geometric properties. Using certain characteristics of a circle, you can divine the circle's other unique properties....
Read More »

http://www.ehow.com/how_7368668_points-radius-angle.html

## How to Find the Distance Between Two Points on a Circle?

The study of geometry requires you to deal with angles and their relation to other measurements, such as distance. When looking at straight lines, calculating the distance between two points is str...
Read More »

http://www.ehow.com/how_7359709_distance-between-two-points-circle.html

## How to Find the Distance Between Two Points Using a Rectangular Coordinate System?

The rectangular coordinate system, also known as the Cartesian coordinate system, identifies points based on their x- and y-coordinates. When you have two points identified by their coordinates, yo...
Read More »

http://www.ehow.com/how_8341740_distance-using-rectangular-coordinate-system.html

## How to Find the Distance Between Each Pair of Points Using the Pythagorean Theorem?

If you have the coordinates of two points, you can find the shortest distance between them using the distance formula, which is derived from the Pythagorean theorem. To use the theorem, you need to...
Read More »

http://www.ehow.com/how_8108123_distance-points-using-pythagorean-theorem.html