Tag Archives: Radius

Finding Circle Centres in 3D

Posted on 18/08/2009 by dougaj4

In 2 new functions for IP.xls I described two Excel User Defined Functions (UDFs) to find the radius and centre of a circle defined by 3D coordinates for either 3 points on the circumference, or for two tangent points and the … Continue reading →

Posted in Coordinate Geometry, Excel, Maths, Newton, UDFs, VBA | Tagged , , , , , , , , | 5 Comments

Two new functions for IP.xls

Posted on 18/07/2009 by dougaj4

Edit 8 Feb 2012: The functions described below have been superseded by new versions which are described at https://newtonexcelbach.wordpress.com/2009/08/18/finding-circle-centres-in-3d/.  That link also gives a description (with diagrams!) of how the functions work.  The download file for the new versions is … Continue reading →

Posted in Excel, Maths, UDFs, VBA | Tagged , , , , , , | 8 Comments