- Rodrigo Cesar Lago
The Journal of the International GeoGebra Institute of São Paulo (IGISP)
If d, i = 1, 2, . . . , n, are the cevians with an end at the vertex of the right angle BÂC of the right triangle ABC and which section the hypotenuse BC in n + 1 congruent segments, then , where a is the measure of the hypotenuse of the right triangle.