Zariski's conjecture and related problems
In the first part of the article the proof of the following theorem is given: Let point be the middle of in the triangle , point the intersection of and the axis of angle , point the foot of the perpendicular from on . If angles are equal, then the angle is the right one. In the second part, the area of right angle triangle using only the length of the axis of the right angle and of the median is derived.