Problem C. 1262. (December 2014)
C. 1262. Prove that if a cyclic quadrilateral has an inscribed circle and a right angle, then it is symmetrical.
(5 pont)
Deadline expired on January 12, 2015.
Statistics:
168 students sent a solution. 5 points: 91 students. 4 points: 16 students. 3 points: 9 students. 2 points: 15 students. 1 point: 29 students. 0 point: 6 students. Unfair, not evaluated: 2 solutionss.
Problems in Mathematics of KöMaL, December 2014