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Forum URL: http://www.cut-the-knot.org/cgi-bin/dcforum/forumctk.cgi
Forum Name: College math
Topic ID: 612
Message ID: 6
#6, RE: Mahavira's formula for cyclic quadrilaterals
Posted by Pierre Charland on May-27-07 at 06:43 PM
In response to message #2
sorry for my late reply,
the angle theta is the angle between either diagonal and the perpendicular upon the other.
Four of them are marked is the included image.