05/01/08 MATHEMATICS DEPARTMENT, FERRIS STATE UNIVERSITY
MATH COLLOQUIUM, THURSDAY, MAY 1, 11:00 AM, STARR 138
SPEAKER: Dr. Vaclav Konecny,
TITLE: The solution to the problem #3258* published in Crux Mathematicorum,
Vol. 33: 2007, p. 298.
Dr. Konecny will present the solution to the problem proposed by Alper Cay, Uzman
Private School, Kayseri, Turkey (Crux Mathematicorum, Vol. 33, No 5, September 2007, p. 298.)
Let ABC be a triangle with angle B = 80 degrees. Let BD be the angle bisector of angle B with D on AC.
If AD = DB + BC, determine angle A, using a purely geometric argument.
REFRESHMENTS: 11:00 am, STARR 138