Mathematical and Physical Journal
for High Schools
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Problem C. 1338. (February 2016)

C. 1338. Let \(\displaystyle D\) denote a point on base \(\displaystyle AB\), and let \(\displaystyle E\) denote a point on leg \(\displaystyle BC\) of an isosceles triangle \(\displaystyle ABC\) such that the triangles \(\displaystyle ACD\), \(\displaystyle CDE\), and \(\displaystyle BDE\) are all isosceles, and triangle \(\displaystyle BDE\) is similar to triangle \(\displaystyle ABC\). Determine the angles of each triangle.

(5 pont)

Deadline expired on March 10, 2016.


Statistics:

126 students sent a solution.
5 points:Csorba Benjámin, Geretovszky Anna, Horváth András János, Kormányos Hanna Rebeka, Mályusz Attila, Marozsák Tóbiás , Márton Anna, Mészáros 01 Viktória, Mikulás Zsófia, Molnár 410 István, Páhoki Tamás, Sebe Anna, Szécsi Adél Lilla, Szilágyi Éva, Tóth 111 Máté , Varga 157 Kristóf, Weisz Máté, Weisz Viktória, Zsombó István.
4 points:Bukor Benedek, Czirják Lilla, Erdélyi Zsófia , Fajszi Bulcsú, Fekete Balázs Attila, Fraknói Ádám, Garamvölgyi István Attila, Kamenár Gyöngyvér, Kasó Ferenc, Kocsis Júlia, Kósa Szilárd, Mohácsi Márton, Nagy 911 Viktória, Nagy Nándor, Nagymihály Panka, Riedel Zsuzsanna, Sal Dávid, Sudár Ákos, Szabó Alexandra.
3 points:29 students.
2 points:50 students.
1 point:4 students.
0 point:5 students.

Problems in Mathematics of KöMaL, February 2016