Problem C. 1319. (November 2015)
C. 1319. The midpoints of the sides of a quadrilateral form a square. The area of the quadrilateral is 50, and two opposite sides are 5 and \(\displaystyle \sqrt{85}\,\). How long are the other two sides?
(5 pont)
Deadline expired on December 10, 2015.
Statistics:
129 students sent a solution.  
5 points:  69 students. 
4 points:  19 students. 
3 points:  5 students. 
2 points:  5 students. 
1 point:  6 students. 
0 point:  23 students. 
Unfair, not evaluated:  1 solution. 
Unfair, not evaluated:  1 solution. 
