Finding the Diameter of a Cyclic Quadrilateral

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SUMMARY

The problem involves finding the diameter of a cyclic quadrilateral with known side lengths of 1, 2, 3, and an unknown side length d, which represents the diameter of the circumscribed circle. The discussion highlights the use of Ptolemy's theorem and Brahmagupta's formula as potential methods for solving the problem. However, the original poster indicates that these methods did not yield a solution. The link provided offers additional resources on cyclic quadrilaterals for further exploration.

PREREQUISITES
  • Understanding of cyclic quadrilaterals
  • Familiarity with Ptolemy's theorem
  • Knowledge of Brahmagupta's formula
  • Basic geometry concepts related to circles
NEXT STEPS
  • Research the application of Ptolemy's theorem in cyclic quadrilaterals
  • Study Brahmagupta's formula for calculating area and its implications
  • Explore the properties of cyclic quadrilaterals and their circumcircles
  • Investigate alternative methods for finding diameters in cyclic shapes
USEFUL FOR

Students studying geometry, mathematics educators, and anyone interested in solving problems related to cyclic quadrilaterals and their properties.

schlynn
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Homework Statement


Given a cyclic quadrilateral with side lengths 1, 2, 3 and d (in that order) where d is the diameter of the circle, find d.


The Attempt at a Solution



I tried using Ptolemy's theorem and Brahmagupta's formula, but to no avail. Can I get pointed in the correct direction please?
 
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Maybe you can find something useful http://pballew.blogspot.com/2009/10/notes-on-cyclic-quadrilaterals.html" .
 
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