n Learning and Teaching Mathematics - Some novel cyclic quadrilateral proofs

Volume 2007, Issue 5
  • ISSN : 1990-6811


Recently in the geometry courses I am teaching at Kennesaw State University, a circle geometry result not so well-known in the USA was posed as a problem, namely, to prove that the opposite angles of a (convex) cyclic quadrilateral are supplementary. One of the students, Matt Hickman, came up with the following proof I had not yet seen before, which readers may find interesting.

Loading full text...

Full text loading...


Article metrics loading...


This is a required field
Please enter a valid email address
Approval was a Success
Invalid data
An Error Occurred
Approval was partially successful, following selected items could not be processed due to error